Remove FETCH_STATIC_MEMBER flag

Fix Foo::${42} and similar

Fixes segfault on direct use, segfault on opcache evaluated use,
leak on temporary use.

Fixes analogeous segfault for ${42} on opcache eval as well.

Don't create live-range across NOPs and some other instructions

Avoid construction of empty live-ranges because of OP_DATA instruction

Implemented the RFC `Support Class Constant Visibility`.

Squashed commit of the following:

commit f11ca0e7a57793fa0e3e7f6d451720e6c42bb0b9
Author: Dmitry Stogov <dmitry@zend.com

Implemented the RFC `Support Class Constant Visibility`.

Squashed commit of the following:

commit f11ca0e7a57793fa0e3e7f6d451720e6c42bb0b9
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue Dec 8 12:38:42 2015 +0300

Fixed test expectation

commit 211f873f542504d0a0f72b6b5cb23908a1c99a2d
Author: Dmitry Stogov <dmitry@zend.com>
Date: Tue Dec 8 12:28:38 2015 +0300

Embed zend_class_constant.flags into zend_class_constants.value.u2.access_flags

commit 51deab84b2cdbf9cdb1a838cf33b2ee45c61748b
Author: Dmitry Stogov <dmitry@zend.com>
Date: Mon Dec 7 11:18:55 2015 +0300

Fixed issues found by Nikita

commit 544dbd5b47e40d38a8ccb96bc5583e9cb7fdd723
Author: Dmitry Stogov <dmitry@zend.com>
Date: Sat Dec 5 02:41:05 2015 +0300

Refactored immplementation of https://wiki.php.net/rfc/class_const_visibility
@reeze created an RFC here and I emailed internals here and didn't get any responses positive/negative.

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Fixed bug #70931 (Two errors messages are in conflict)

Forbid namespace\int type hint as well

Always lower name

Revert "Improved fix for Fully qualified (leading backslash) type names must fail"

This reverts commit 00865ae22f2c5fdee9e500ce79d442467e0a0899.

Improved fix for Fully qualified (leading backslash) type names must fail

it now all fails with COMPILE_ERROR instead of syntax error for T_ARRAY
but COMPILE_ERROR for int

Fix scalar type names with leading backslash

Port fix to 7.0

Fixed bug #70958 (Invalid opcode while using ::class as trait method paramater default value)

Fixed bug #70957 (self::class can not be resolved with reflection for abstract class)

Don't keep wrong jump target in last CATCH.

Add void return type

Fixed bug #70912 (Null ptr dereference instantiating class with invalid array property)

Squashed commit of the following:

commit afe963e6cc289696e60c6c679796ba2197c52b3b
Author: Dmitry Stogov <dmitry@zend.com>
Date: Fri Nov 13 15:32:29 2015 +0300

Added ne

Squashed commit of the following:

commit afe963e6cc289696e60c6c679796ba2197c52b3b
Author: Dmitry Stogov <dmitry@zend.com>
Date: Fri Nov 13 15:32:29 2015 +0300

Added news entry

commit a126b891c97848dd7ef8f1abf716328c46e0f19c
Author: Dmitry Stogov <dmitry@zend.com>
Date: Fri Nov 13 15:29:21 2015 +0300

VERIFY_RETURN_TYPE doesn't have to cleanup operand on exception, bacause now, live temporary variables are released by exception unwinder.

commit 0db475e98786e6bcaa8401ee3e0b33743b9a2f2b
Author: Dmitry Stogov <dmitry@zend.com>
Date: Thu Nov 12 22:55:39 2015 +0300

Fixed copy/paste

commit 0ac73fe7174bec9de9a610319a98b259bea67f7f
Author: Dmitry Stogov <dmitry@zend.com>
Date: Wed Nov 11 16:11:50 2015 +0300

Fixed bug #62210 (Exceptions can leak temporary variables)

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Separate common part of compile_file() and compile_string() into zend_compile()

Changed ZEND_FREE.op2.num and ZEND_FE_FREE.op2.num back to use live_range_offset (try_catch_offset does't work)

We don't nees zend_op_array->brk_cont_array at run-time anymore.
Move zend_op_array->brk_cont_array into CG(context).brk_cont_array.
Use more compact zend_op_array->live_range instead of zend

We don't nees zend_op_array->brk_cont_array at run-time anymore.
Move zend_op_array->brk_cont_array into CG(context).brk_cont_array.
Use more compact zend_op_array->live_range instead of zend_op_array->brk_cont_array.
Semantic is kept unchanged.

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Make FE_FETCH and following assignments to be a part of a loop.

Changed meaning of "op2" for ZEND_FREE, ZEND_FE_FREE, ZEND_FAST_CALL, ZEND_FAST_RET.
Previously it was an instruction number.
Now it's an index in op_array->try_cacth_array[].

Use ZEND_STRL macro for builtin_types

Fixed bug #70828 (php-fpm 5.6 with opcache crashes when referencing a non-existent constant)