Revert "hrtime implementation update for Mac"

This reverts commit a3e55286a676fdf4f5919d219e2a0df93f817211.

This commit broke the build for OSX before Sierra.

The a

Revert "hrtime implementation update for Mac"

This reverts commit a3e55286a676fdf4f5919d219e2a0df93f817211.

This commit broke the build for OSX before Sierra.

The apple documentation states the equivalent uses raw uptime, and
the source code of the non portable function says raw uptime would
call the same routine we were calling before this commit.

Since the correct version of this commit - according to docs -
would bring no value whatsoever, and this version breaks the build
there doesn't seem any sense in making this change.

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Mark various functions with void arguments.

This fixes a bunch of [-Wstrict-prototypes] warning,
because in C func() and func(void) have different semantics.

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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hrtime implementation update for Mac

Using a more modern and simpler api available since Sierra (2016).

Closes GH-6609.

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool is retained as an alias.

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Remove proto comments from C files

Closes GH-5758

Remove mention of PHP major version in Copyright headers

Closes GH-4732.

Add do...while(0) for RETURN_* and ZVAL_* APIs

Closes GH-4255.

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.

A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.

This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.

With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.

Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files. All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.

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Remove yearly range from copyright notice

Sync leading and final newlines in source code files

This patch adds missing newlines, trims multiple redundant final
newlines into a single one, and trims redundant leading newlines.

Sync leading and final newlines in source code files

This patch adds missing newlines, trims multiple redundant final
newlines into a single one, and trims redundant leading newlines.

According to POSIX, a line is a sequence of zero or more non-' <newline>'
characters plus a terminating '<newline>' character. [1] Files should
normally have at least one final newline character.

C89 [2] and later standards [3] mention a final newline:
"A source file that is not empty shall end in a new-line character,
which shall not be immediately preceded by a backslash character."

Although it is not mandatory for all files to have a final newline
fixed, a more consistent and homogeneous approach brings less of commit
differences issues and a better development experience in certain text
editors and IDEs.

[1] http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_206
[2] https://port70.net/~nsz/c/c89/c89-draft.html#2.1.1.2
[3] https://port70.net/~nsz/c/c99/n1256.html#5.1.1.2

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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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Update year range in hrtime c and h files

Optimize zend_hash_real_init()

Revert "Add possibility to lower timer resolution"

This reverts commit c3717d9aecbe65cb2e5778a24a91e9eaf638639e.

The final mitigation of the consequences with spectre should be

Revert "Add possibility to lower timer resolution"

This reverts commit c3717d9aecbe65cb2e5778a24a91e9eaf638639e.

The final mitigation of the consequences with spectre should be
discussed more also with the regard to the happenings on the
developments. Right now a preliminary mitigation might be wrong or
suboptimal, thus reverting this.

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Add possibility to lower timer resolution

The recently discovered security flaw Spectre requires a high resolution
timer. To the today's knowledge, PHP can't be used to create an attack

Add possibility to lower timer resolution

The recently discovered security flaw Spectre requires a high resolution
timer. To the today's knowledge, PHP can't be used to create an attack for
this flaw. Still some concerns were raised, that there might be impact in
shared hosting environments. This patch adds a possibility to reduce the
timer resolution by an ini setting, thus giving administrators full
control. Especially, as the flaw was also demonstrated by an abuse of
the JS engine in a browser, Firefox reduced several time sources to 20us.
Any programming language, that doesn't compile to JIT, won't be able to
produce an attack vector for Meltdown and Spectre, at least by todays
knowledge. There are also other factors that say that the security
concern on the hrtime feature is to the big part not justified, still we
aim JIT in the future. Thus, adding a possibility to control the timer
resolution is a good and small enough tradeoff for safety and future.

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Implement high resolution monotonic timer function hrtime()