Fix typos in UPGRADING.INTERNALS

Get rid of ZEND_ACC_CTOR, ZEND_ACC_DTOR and ZEND_ACC_IMPLEMENTED_ABSTRACT

Remove AC_FUNC_UTIME_NULL

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

This macro

Remove AC_FUNC_UTIME_NULL

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

This macro checks if `utime(file, NULL)` sets file's timestamp to the
current time and defines the `HAVE_UTIME_NULL` symbol. This check was
relevant on very old systems (for example, 4.3BSD released in 1986) and
today can be omitted for systems with utime since it should be well
supported by now. [2]

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 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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Implement #64517: Add AC_ARG_PROGRAM macro

The AC_ARG_PROGRAM Autoconf macro provides program name transformations
when installing. This patch implements #64517 and prepares the
impl

Implement #64517: Add AC_ARG_PROGRAM macro

The AC_ARG_PROGRAM Autoconf macro provides program name transformations
when installing. This patch implements #64517 and prepares the
implementation for the request #60518.

In ./configure --help it additionally outputs --program-prefix=PREFIX,
--program-suffix=SUFFIX and the upcoming --program-transform-name=PROGRAM
option.

Macro AC_ARG_PROGRAM is available since Autoconf 2.0 and needs to be
called after the AC_CANONICAL_TARGET macro.

Refs:
- https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Transforming-Names.html

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Change zend_lookup_class_ex() and zend_fetch_class_by_name() prototypes to accept optional lower-case class name as zend_string*, instead of zval*.

Create and expose php_sys_symlink() and php_sys_link()

These macros are supposed to behave like POSIX's symlink() and link(),
respectively, on POSIX compliant systems and on Windows.

Create and expose php_sys_symlink() and php_sys_link()

These macros are supposed to behave like POSIX's symlink() and link(),
respectively, on POSIX compliant systems and on Windows.

Future scope: merge link.c and link_win32.c

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Prepare UPGRADING(.INTERNALS) for PHP 7.4

We also add this as task to README.RELEASE_PROCESS, so that it's not
overlooked next time.

Remove TSRM_CHECK_GCC_ARG and LIBZEND_CPLUSPLUS_CHECKS

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

[ci skip] Document RETSIGTYPE

[ci skip] Note HAVE_ST_BLKSIZE and HAVE_ST_RDEV

[ci skip] Note removal of PHP_PROG_LEX

Pack zend_constant.flags and zend_constant.module_number into reserved space inside zend_constant.value.

typo

Encode parent class name as IS_CONST operand in DECLARE_INHERITED_CLASS and DECLARE_ANON_INHERITED_CLASS opcodes (eliminate FETCH_CLAS
S opcode).

add info about zend_class_entry.iterator_funcs

[ci skip] Fix typos

[ci skip] Document changes to php_add[c]slashes

[ci skip] Fix a typo. RANGE_RANGE should be RAND_RANGE

[ci skip] Document GC_C() → zend_gc_get_status()

[ci skip] Document new typedef zif_handler

[ci skip] fixed typos

Added note about zend_function.reserved[] fields usage

add note about php_url struct changes

Fix bug #44217: Output after stdout/stderr closed cause immediate exit with status 0

We exit with status 255 instead.