Added garbage collector

Eliminate unnecessary checks for INC/DEC IS_CV

Fixed unspecialized executor

MFH: Bump copyright year, 2 of 2.

executor optimization

Fixed bug #43344 (Wrong error message for undefined namespace constant)

Fixed compilation on Windows

Fixed bug #43128 (Very long class name causes segfault)

Speed-up of ZEND_DO_FCALL and ZEND_INIT_FCALL_BY_NAME by lowercasing and calculating hash values at compile time.

Safe exit from executor()

- MFH Improved version of ternary shortcut (Marcus)

Optimization of zend_do_fcall_common_helper()

Fixed bug #43136 (possible crash on script execution timeout. The EG(function_state_ptr) is completely removed, EG(current_execute_data)->function_state must be used instead)

Fixed bug #43175 (__destruct() throwing an exception with __call() causes segfault)

Fixed bug #43201 (Crash on using unitialized vals and __get/__set)

fix bug37251.phpt failure (two error messages instead of one)
should I merge this to 5_2?

Fixed variations of bug #35163

Fixed bug #35163 (Array elements can lose references)

MFH: Added macros for managing zval refcounts and is_ref statuses

Generated files that are part of the previous patch

Fixed bug #42818 ($foo = clone(array()); leaks memory)

Fixed bug #42772 (Storing $this in a static var fails while handling a cast to string)

ws

Fixed access to freed memory in tests/classes/__call_001.phpt

Fixed bug #42819 (namespaces in indexes of constant arrays)