Fixed bug #45910 (Cannot declare self-referencing constant)

- MFH Improve exception linking

mark empty_fcall_info and empty_fcall_info_cache as constant. a few less bytes in the dirty page :P

- MFH Fix shutdown order

- MFH error handling, now with save, replace, restore

- MFH store error handling mode on stack when executing internal
or overloaded functions and methods. [...]

Fixed bug #44100 (Inconsistent handling of static array declarations with duplicate keys).

*** empty log message ***

Added checks for destroied objects

Added support for overloaded functions (e.g. COM) in call_user_func().

Fixed is_callable/call_user_func mess that had done different things for very similar arguments e.g. array("A","B") and "A::B"

Fixed uninitialised data

LSB parent/self forwarding

Added support for lambda functions and closures

- Fixed bug #45180 ('class::method' works differently than array('class', 'method'))

- Fixed bug #45089 (__callStatic $name case sensitivity)

Use IS_CV for dirrent access to $this variable

Use lazy symbol table initialization for op_arrays called from internal php functions

GC fix

Added missing lazy initialization

Lazy EG(active_symbol_table) initialization

Optimized ZEND_RETURN opcode to not allocate and copy return value if it is not
used.

MFH: Implemented "jump label" operator (limited "goto")
[DOC]

On Windows I guess there is no point starting the timeout thread until
we actually have a timeout value.

Make sure we set the signal handler when reset_signals is true, regardless
of the actual timeout value.