Classify object handlers are required/optional

Trim trailing whitespace in source code files

Trim trailing whitespace in source code files

Allocate only necessary space for static properties of internal classes in ZTS mode.

Class constants and default property values can't be IS_REFERENCE anymore.

Replace ZEND_ACC_ANON_BOUND, ZEND_ACC_UNRESOLVED_PARENT and ZEND_ACC_UNRESOLVED_INTERFACES with single ZEND_ACC_LINKED.

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 unused ZEND_FILE_LINE in i_zval_ptr_dtor

Make visibilty check in is_callable() to be consistent with zend_std_get_method()

Get rid of ZEND_ACC_CTOR, ZEND_ACC_DTOR and ZEND_ACC_IMPLEMENTED_ABSTRACT

Fixed bug #75797

Fix zend_register_class_alias_ex() to use non-persistent strings
for (non-persistent) userland classes.

Fixed zend_read_static_property

Fix length to copy

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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API cleanup.
Removed useless filename and lineno arguments, used in DEBUG build.
The patch doesn't break source compatibility of public API (only binary compatibility).

Fixed reference-counting in zend_parse_arg_str_weak()

Avoid useless checks in object_init()

Replace legacy zval_dtor() by zval_ptr_dtor_nogc() or even more specialized destructors.
zval_dtor() doesn't make a lot of sense in PHP-7.* and it's used incorrectly in some places.
Its occur

Replace legacy zval_dtor() by zval_ptr_dtor_nogc() or even more specialized destructors.
zval_dtor() doesn't make a lot of sense in PHP-7.* and it's used incorrectly in some places.
Its occurances should be replaced by zval_ptr_dtor() or zval_ptr_dtor_nogc(), or even more specialized destructors.

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Avoid string comparisons for magic methods (all magic methods start with "__")

Add zend_update_static_property_ex API

And cleanup the implementation to perform a normal by-value
assignment.

Add zend_read_static_property_ex API

For symmetry with zend_read_property_ex.

Removed INIT_OVERLOADED_CLASS... macros

Fixed ZTS race condition (zend_class_entry->ce_flags of internal classes must not be modified, because internal class enties are shared between threads)

Lazy function copying from op_cache SHM into process memory

Micro-optimization