Remove separate *nix system build for Zend engine

Removed files used to provide building Zend engine separately using
Autoconf and Automake:
cd Zend && ./buildconf && ./configure

Remove separate *nix system build for Zend engine

Removed files used to provide building Zend engine separately using
Autoconf and Automake:
cd Zend && ./buildconf && ./configure

Since Zend engine is tightly integrated in the PHP code itself and
current root configure.ac and acinclude provide this patch removes
these. Removed files also included several obsolete macros and
Automake dependency which is not used in main *nix PHP build system.

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Remove support for Rhapsody code name

The Rhapsody code name was once used for computers with operating system
by Apple and was mostly replaced with a newer code name Darwin:
- https

Remove support for Rhapsody code name

The Rhapsody code name was once used for computers with operating system
by Apple and was mostly replaced with a newer code name Darwin:
- https://en.wikipedia.org/wiki/Rhapsody_(operating_system)
- https://en.wikipedia.org/wiki/Darwin_(operating_system)

This patch removes obsolete checks from the *nix build script files.

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Fix #76825: Undefined symbols ___cpuid_count

Apparently, the presence of `cpuid.h` is not necessarily sufficient to
guarantee the availability of `__cpuid_count()`. We therefore test fo

Fix #76825: Undefined symbols ___cpuid_count

Apparently, the presence of `cpuid.h` is not necessarily sufficient to
guarantee the availability of `__cpuid_count()`. We therefore test for
the latter explicitly.

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Trim trailing whitespace in source code files

Trim trailing whitespace in source code files

Remove HAVE_STDARG_H

The C89 standard and later defines the `<stdarg.h>` header as part of
the standard headers [1]. On current systems it is always present and
can be included uncon

Remove HAVE_STDARG_H

The C89 standard and later defines the `<stdarg.h>` header as part of
the standard headers [1]. On current systems it is always present and
can be included unconditionally.

Checking for presence and functionality of the `<stdarg.h>` header and
variadic function is not relevant anymore on current systems since this
is always available.

Also Autoconf suggests relying on at least C89 or above [2] and [3].

The following files were regenerated with re2c 1.0.3:
- Zend/zend_language_scanner.c
- Zend/zend_language_scanner_defs.h

Refs:
[1] https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2
[2] http://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/headers.m4
[3] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html

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Remove HAVE_STRING_H

The C89 standard and later defines the `<string.h>` header as part of
the standard headers [1] and on current systems it is always present.

Code included al

Remove HAVE_STRING_H

The C89 standard and later defines the `<string.h>` header as part of
the standard headers [1] and on current systems it is always present.

Code included also `<strings.h>` header as an alterinative in some
files. This kind of check was relevant on some older systems where the
`<strings.h>` file included definitions for the C89 compliant
`<string.h>`. Today such alternative check is not required anymore. The
`<strings.h>` file is part of the POSIX definition these days.

Also Autoconf suggests doing this and relying on C89 or above [2] and [3].

This patch also cleans few unused `<strings.h>` inclusions in the libmbfl.

[1]: https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2
[2]: http://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/headers.m4
[3]: https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html

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Remove unused HAVE_MEM_MMAP_ANON and HAVE_MEM_MMAP_ZERO checks

These haven't been used since the MM rewrite in PHP 7.0. Nowadays
we assume that either MAP_ANON or MAP_ANONYMOUS is availa

Remove unused HAVE_MEM_MMAP_ANON and HAVE_MEM_MMAP_ZERO checks

These haven't been used since the MM rewrite in PHP 7.0. Nowadays
we assume that either MAP_ANON or MAP_ANONYMOUS is available.

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Remove HAVE_STDLIB_H

The C89 and later standard defines the `<stdlib.h>` header as part of
the standard headers [1] and on current systems it is always present
and the `HAVE_STDLIB_H

Remove HAVE_STDLIB_H

The C89 and later standard defines the `<stdlib.h>` header as part of
the standard headers [1] and on current systems it is always present
and the `HAVE_STDLIB_H` symbol can be removed.

Also Autoconf suggests doing this and relying on C89 or above [2] and [3].

[1] https://port70.net/~nsz/c/c89/c89-draft.html#4.1.2
[2] http://git.savannah.gnu.org/cgit/autoconf.git/tree/lib/autoconf/headers.m4
[3] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html

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Remove AC_FUNC_MEMCMP

Autoconf 2.59d (released in 2006) [1] started promoting several macros
as not relevant for newer systems anymore, including the `AC_FUNC_MEMCMP`.

On some o

Remove AC_FUNC_MEMCMP

Autoconf 2.59d (released in 2006) [1] started promoting several macros
as not relevant for newer systems anymore, including the `AC_FUNC_MEMCMP`.

On some old systems such as SunOS 4.1.3 (EOL in 2003) and NeXT x86
OpenStep (discontinued) the `memcmp` function wasn't present or it
didn't work properly. [2]

On current systems including at least Solaris 10+ this check is not
relevant anymore.

Refs:
[1] http://git.savannah.gnu.org/cgit/autoconf.git/tree/NEWS
[2] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html

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Fixed bug #76825 (Undefined symbols ___cpuid_count)

Remove AC_FUNC_VPRINTF

Autoconf 2.59d (released in 2006) 1 started promoting several macros
as not relevant for newer systems anymore, including the AC_FUNC_VPRINTF.

This macro

Remove AC_FUNC_VPRINTF

Autoconf 2.59d (released in 2006) 1 started promoting several macros
as not relevant for newer systems anymore, including the AC_FUNC_VPRINTF.

This macro checks for presence of the vprint function otherwise checks
for presence of the _doprnt function. This check was relevant on very
old systems and today can be omitted since it should be well supported
by now. [2]

Also PHP doesn't use the HAVE_VPRINTF or HAVE_DOPRNT symbols.

Refs:
[1] http://git.savannah.gnu.org/cgit/autoconf.git/tree/NEWS
[2] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html

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Remove TSRM_CHECK_GCC_ARG and LIBZEND_CPLUSPLUS_CHECKS

This removes two old Autoconf macro definitions since they are not used
anymore.

Replace obsolete AC_TRY_FOO with AC_FOO_IFELSE

Autoconf 2.50 released in 2001 made several macros obsolete including
the AC_TRY_RUN, AC_TRY_COMPILE and AC_TRY_LINK:
http://git.savann

Replace obsolete AC_TRY_FOO with AC_FOO_IFELSE

Autoconf 2.50 released in 2001 made several macros obsolete including
the AC_TRY_RUN, AC_TRY_COMPILE and AC_TRY_LINK:
http://git.savannah.gnu.org/cgit/autoconf.git/tree/ChangeLog.2

These macros should be replaced with the current AC_FOO_IFELSE instead:
- AC_TRY_RUN with AC_RUN_IFELSE and AC_LANG_SOURCE
- AC_TRY_LINK with AC_LINK_IFELSE and AC_LANG_PROGRAM
- AC_TRY_COMPILE with AC_COMPILE_IFELSE and AC_LANG_PROGRAM

PHP 5.4 to 7.1 require Autoconf 2.59+ version, PHP 7.2 and above require
2.64+ version, and the PHP 7.2 phpize script requires 2.59+ version which
are all greater than above mentioned 2.50 version therefore systems
should be well supported by now.

This patch was created with the help of autoupdate script:
autoupdate <file>

Reference docs:
- https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Obsolete-Macros.html
- https://www.gnu.org/software/autoconf/manual/autoconf-2.59/autoconf.pdf

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Remove obsolete AC_TYPE_SIGNAL

The AC_TYPE_SIGNAL macro defined the RETSIGTYPE based on the signal
type defined in the signal.h. On pre C89 sistems (K&R C) it could be
void or int. S

Remove obsolete AC_TYPE_SIGNAL

The AC_TYPE_SIGNAL macro defined the RETSIGTYPE based on the signal
type defined in the signal.h. On pre C89 sistems (K&R C) it could be
void or int. Since C89 it can be safely assumed that the signal and
therefore the RETSIGTYPE is always void, so the RETSIGTYPE can be
replaced with void in the code if it uses it. PHP doesn't use the
RETSIGTYPE in current code anyway.

Refs:
- https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Obsolete-Macros.html

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Trim trailing whitespaces in build files

Some editors utilizing .editorconfig automatically trim whitespaces. For
convenience this patch removes whitespaces in certain build files in

Trim trailing whitespaces in build files

Some editors utilizing .editorconfig automatically trim whitespaces. For
convenience this patch removes whitespaces in certain build files in
Zend and TSRM folders.

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Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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Fix detection of isnan and isinf

The isnan() and isinf() are C99 macros not functions.

Also fix is_infinite(-INF) in case isinf is not defined.

Revert "Fix detection of isnan and isinf"

This reverts commit 9ea0949f43959ff0cf519e7a10ef9de7a538cde3.

Fix detection of isnan and isinf

The isnan() and isinf() are C99 macros not functions.

Also fix is_infinite(-INF) in case isinf is not defined.

Enable Zend signals by default

Reverted chunk committed by mistake.

Fixed phpdbg build without --enable-zend-signals

Deduplicate NAN/INF portability, move to Zend

Support for XLC compiler