Fixed and cleaned up implementaton of Closure::call() for phpng

Fixed unbound scoped closure edge cases and added tests for them

Rename ::apply to ::call for the sake of JS consistency

Added optional bool param $unbound_scoped to Closure::bind and ::bindTo

Implemented Closure::apply

Refactored run_time_cache usage in object handlers

Uinified call frame handling for user and internal functions.
Now EG(current_execute_data) always point to the call frame of the currently executed function.

Refactored parameter passing mechanism.

In PHP-5.6 and below each argument passed to user function was copies on VM stack twice.
Now we always have ZEND_INIT_FCALL (or simular) opcode th

Refactored parameter passing mechanism.

In PHP-5.6 and below each argument passed to user function was copies on VM stack twice.
Now we always have ZEND_INIT_FCALL (or simular) opcode that pushes "call frame" on top of VM stack.
"Call frame" is actually the same zend_execute_data structure.
All the following ZEND_SEND instructions push arguments on top of the stack in a way that they directly comes into corresponding CV variables of the called frame. Extra arguments are copied at the end of stack frame (after all CV and TMP variables) on function enterance.

There are two minor incompatibilities:
1) It's not allowed to decalre functions redefining arguments e.g. "function foo($a,$a) {}".
2) func_get_arg() and func_get args() return the current value of argument and not the original value that was sent.

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Fix bug 666222

This also adds some smaller, isolated tests related to bug 66622.

Fix bug 666222

This also adds some smaller, isolated tests related to bug 66622.

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

Fixed apply_func_args_t

Use optimized zend_array_dup() function. convert zend_hash_num_elements() and zend_hash_next_free_element() into macros.

Added vstrpprintf strpprintf to avoid duplicate string

(the function name maybe improvement)

Convert zval_get_string() into "fast path" macro and "slow path" function

Combine HashTable.flags and HashTable.nApplyCount into single 32-bit word

Moved zend_literal->cache_slot right into zval.
It should be accessed using Z_CACHE_SLOT() macro.
zend_literal structure is removed.
API functions that accepted pointer to zend_literal no

Moved zend_literal->cache_slot right into zval.
It should be accessed using Z_CACHE_SLOT() macro.
zend_literal structure is removed.
API functions that accepted pointer to zend_literal now accept pointer to zval or cache_slot directly.
Calls of such functiond that now accept cache_slot need to be changed to pass -1 instead of NULL.

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Add functions for extracting long/double/string from zval

These function get the long / double / string value of a zval with
usual cast semantics, but without actually modifying the zval

Add functions for extracting long/double/string from zval

These function get the long / double / string value of a zval with
usual cast semantics, but without actually modifying the zval.

Didn't go on a killing spree for convert_to_* yet...

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Cleanup (1-st round)

Fixed destruction of objects and iterators on unclean request shutdown and GC (few cases are still unfixed).
Now we destroy objects it two steps. At first - object properties of all objects and o

Fixed destruction of objects and iterators on unclean request shutdown and GC (few cases are still unfixed).
Now we destroy objects it two steps. At first - object properties of all objects and only then the objects their selves.

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Refactored data structures to keep zend_object* instead of a whole zval in some places

cosure->debug_info is not a subject for GC

Refactored GC (incomplete)

Fixed NULL pointer dereferencing

Fixed closures in static methods

Fixed uninitialized zval