master renames phase 1

first shot on merging the core fro the int64 branch

Fix leaks

Must find a good way to handle constant expressions...

Fixed segfault

Fixed GC bug

Revert "stash" (pushed by accident)

This reverts commit a18bf5fc9303e2739ee7026bdb3bbf272bf4baa8.

stash

Removed EG(active_symbol_table) and use corresponding value from EG(current_execute_data)

Use reference counting instead of zval duplication

Use specialized functions instead of macros

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

Fixed resource destruction

Re-applyed Bob's patch with minor fixes

Reverted Bob's patch (it breaks many tests when run with opcache and needs to be fixed first).

Re-added fix for bug #66015 and adapted for phpng branch

Split IS_BOOL into IS_FALSE and IS_TRUE

Use zval_get_string in print_zval and propagate TSRMLS

Cleanup (1-st round)

Fixed interface constants inheritance.
Now we use IS_REFERENCE for inhereted class constants.
I might miss some edje cases.

Refactored ZVAL flags usage to simplify various checks (e.g. Z_REFCOUNTED(), candidate for GC, etc)

Changed data layout to allow more efficient operations

STR_DUP() doesn't duplicate interned strings anymore. In case new string is required STR_INIT() or STR_ALLOC() should be used.

Refactored IS_INDIRECT usage for CV and object properties to support HashTable resizing

Fixed reference counting

Fixed passing argument by refefence from internal functions