fix THIS_HASHVAL

Drop znode extended attribute and unused union members

Merge remote-tracking branch 'php-src/phpng' into ast

Conflicts:
Zend/zend_ast.c
Zend/zend_compile.c
Zend/zend_language_parser.y

Incomplete merge!

first shot on merging the core fro the int64 branch

Fix destruction order in zend_shutdown (bug #65463, #66036)

If Apache or a similar SAPI receives a signal during PHP processing
it calls zend_shutdown() without calling shutdown_executor

Fix destruction order in zend_shutdown (bug #65463, #66036)

If Apache or a similar SAPI receives a signal during PHP processing
it calls zend_shutdown() without calling shutdown_executor().
#65463: If a module like Gearman or Memcached is loaded,
in the unfixed version it is unloaded by zend_destroy_modules() before the
CG(CLASS_TABLE) is destructed. When CG(CLASS_TABLE) is destructed,
any pointers to methods (specifically around destruction) in the unloaded
module's .so are now dangling and the process segfaults.
#66036: Any subclasses of an internal class like ArrayObject need
to be destructed in order: subclass first and then the internal class. In the
unfixed version zend_shutdown() clears the CG(CLASS_TABLE) from the head
of the list onwards, so internal classes are destructed first and user-defined
classes last. Internal classes are alloc/deallocated with malloc/free while
user-defined classes with emalloc/efree. If there's shared data between them
then efree() could be called instead of free() leading to a seg-fault.

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cleanup

Fixed bug #67725 (now we create immutable arrays only in SHM)

Support doc comments for propreties

Rename _tmp_compile_const_expr

Also remove recursive immutization of arrays there, because this
is already handled when the array is created.

Remove old macro/function

Remove some unused compiler globals

More dead code

zend_get_class_fetch_type works on zend_string

Remove duplicate code

Cleanup dead/duplicate code

Add zend_ast_list* variant to parser stack element

Use more specific parser stack nodes

Cleanup member modifier code

Create namespace_name via AST

zend_do_return -> zend_emit_final_return

Remove dead code

Merge branch 'phpng' into ast

Conflicts:
Zend/zend_compile.c
Zend/zend_compile.h
Zend/zend_vm_def.h
Zend/zend_vm_execute.h

Some of dm

Merge branch 'phpng' into ast

Conflicts:
Zend/zend_compile.c
Zend/zend_compile.h
Zend/zend_vm_def.h
Zend/zend_vm_execute.h

Some of dmitry's optimizations are not merged in yet!

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Dead code

Handle __halt_compiler()

Add NS error checks

Those can probably be implemented in a better way now...