Removed unused array

Allow commas in specializer conditions

year++

year++

fixed "unused function" compilation warning

Fix warning in the proper place

Remove duplicate handlers for commutative operations

Move constants into read-only data segment

Reduced VM code size.
Made FETCH_DIM/OBJ_FUNC_ARG to dispatch ro corresponding FETCH_DIM/OBJ_R/_W handlers.
Merged TMP and VAR specializations of ZEND_FETCH_OBJ_R.
Allowed dispatching to

Reduced VM code size.
Made FETCH_DIM/OBJ_FUNC_ARG to dispatch ro corresponding FETCH_DIM/OBJ_R/_W handlers.
Merged TMP and VAR specializations of ZEND_FETCH_OBJ_R.
Allowed dispatching to less specialized handelrs and helpers. (e.g. from OP_TMP_CONST to OP_TMPVAR_CONST).

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Optimization of init_func_execute_data()

Fix ZEND_VM_SPEC=0 build

TYPE_CHECK instruction changed. Now it keeps in extended_value a type mask.
This makes check for "boolean" cheaper and allows check combination e.g. (is_string($a) || is_null($a))

Changed the way VM accesses constant operands in 64-bit builds.

VM refactoring, to avoid passing "execute_data" into helper functions that can access it using global register variable.

Switch to HYBRID VM

HYBRID VM cleanup

Fixed USER_OPCODE handling in HYBRID VM.

typo

Cleanup

Fixed zend_vm_call_opcode_handler(). Make phpdbg work with HYBRID VM.

Added missing ZEND_VM_HOT define

Implemented HYBRID VM instruction dispatch method that takes advantages of both CALL and GOTO VMs.

Update copyright headers to 2017

Merge branch 'PHP-7.1'

* PHP-7.1:
Remove extraneous parentheses in conditions

Remove extraneous parentheses in conditions

The zend_vm_gen.php generator now checks if the condition is already
enclosed by parentheses, and them only if needed.

This fixes nin

Remove extraneous parentheses in conditions

The zend_vm_gen.php generator now checks if the condition is already
enclosed by parentheses, and them only if needed.

This fixes nine clang/llvm parentheses-equality warnings.

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