Fixing possible mm heap corruption in 5.6
Re-enabling use of RETVAL_ZVAL_FAST, fix to avoid possible mm heap corruption
Removing unused variable
Force copying of temporary parameters in 5.6
Disabling fcache for 5.6
Fixing wrong variable
Fully disabling fcache in 5.6
Using zend functions when updating/reading static properties
Don't ptr_dtor when observed value is a reference
Don't ptr_dtor when observed value is a reference (2)
Don't ptr_dtor when observed value is a reference (3)
Don't ptr_dtor when observed value is a reference (4)
Don't ptr_dtor when observed value is a reference (5)
Don't ptr_dtor when observed value is a reference (6)
Don't ptr_dtor when observed value is a reference (7)
Don't ptr_dtor when observed value is a reference (8)