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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Disable C4101 warnings entirely on Windows

Use an inline handler instead of repeating logic for calling assign op helpers each time

Revert "Fix return value memory leaks upon exceptions in opcode operand freeing"

This reverts commit 9ad9d7ae375a6e8847ceaab287d3d23e0963a06e.

Fix return value memory leaks upon exceptions in opcode operand freeing

Remove redundant \t

Merge branch 'pull-request/1929'

Fixed executor without global register variales (gcc warnings or clang errors)

Turn safe timeout handling into general interrupt handling ability.

Implemented RFC: Fix inconsistent behavior of $this variable
Squashed commit of the following:

commit bdd3b6895c3ce3eacfcf7d4bf4feb8dfa61801fd
Author: Dmitry Stogov <dmitry@zend.com>

Implemented RFC: Fix inconsistent behavior of $this variable
Squashed commit of the following:

commit bdd3b6895c3ce3eacfcf7d4bf4feb8dfa61801fd
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Jun 16 00:19:42 2016 +0300

Fixed GOTO VM

commit 2f1d7c8b89ce821086d357cf65f629f040a85c03
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 21:01:57 2016 +0300

Removed unused variable

commit cf749c42b0b1919f70b1e7d6dcbfff76899506af
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 19:06:16 2016 +0300

Protection from $this reassign through mb_parse_str()

commit 59a9a6c83c66b666971e57f1173b33a422166efd
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 18:14:50 2016 +0300

Added type inference rule for FETCH_THIS opcode

commit 73f8d14a856f14a461430b3c7534ab2ce870cbf6
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Jun 15 18:11:18 2016 +0300

Restored PHP-7 behavior of isset($this->foo).
It throws exception if not in object context.
Removed useless opcode handlers.

commit fa0881381e8ae97e022ae5d1ec0851c952f33c82
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 31 12:25:47 2016 +0300

Changed "Notice: Undefined variable: this" into "Exception: Using $this when not in object context".

commit e32cc528c0f2c97963d8ec83eff0269f1f45af18
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue May 24 02:02:43 2016 +0300

Throw exception on attempt to re-assign $this through extract() and parse_str().

commit 41f1531b52113ec8a4c208aa6b9ef50f1386bb3f
Author: Dmitry Stogov <dmitry@zend.com>
Date: Mon May 23 22:18:36 2016 +0300

Fixed inconsistent $this behavior

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