Ct bind private/final $this method call args

The test covers two edge-cases wrt opcache support.

Use DO_FCALL_BY_NAME instead of DO_FCALL, if possible

Fix static method arg binding in traits

Fix FETCH_CLASS_SELF comparisons

Turns out those don't form a bitfield.

Statically bind static method call arguments

If we know what method will be called, use ct-bound send opcodes.

The intl test is changed because a runtime error changed to a
comp

Statically bind static method call arguments

If we know what method will be called, use ct-bound send opcodes.

The intl test is changed because a runtime error changed to a
compile-time error.

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Improve the names

Happy new year (Update copyright to 2016)

Speed up fetching of class entries for self:: parent:: and static::

This is generalized solution for Bob's idea of speed up self::method() calls without ZEND_FETCH_CLASS.

At first,

Speed up fetching of class entries for self:: parent:: and static::

This is generalized solution for Bob's idea of speed up self::method() calls without ZEND_FETCH_CLASS.

At first, it adds few new opcodes to separate class related behaviour:
FETCH_STATIC_PROP_R
FETCH_STATIC_PROP_W
FETCH_STATIC_PROP_RW
FETCH_STATIC_PROP_FUNC_ARG
FETCH_STATIC_PROP_UNSET
FETCH_STATIC_PROP_IS
UNSET_STATIC_PROP
ISSET_ISEMPTY_STATIC_PROP
FETCH_CLASS_CONSTANT

At seconds, it enables IS_UNUSED operand to fetch (self, parent or static without separate FETCH_CLASS) for new opcodes and the following ones:
INIT_STATIC_METHOD_CALL
NEW
END_INSTANCEOF

Finaly, opcache optimizer had to be fixed to support new opcodes.

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Fixed bug #69159 (Opcache causes problem when passing a variable variable to a function)

Added specialized versions of DO_FCALL handler:
DO_ICALL - for internal functions
DO_UCALL - for user functions
DO_FCALL_BY_NAME - plain, most probably user, funcstions (not methods)

Split INIT_FCALL_BY_NAME inti INIT_FCALL_BY_NAME(CONST+STRING) and INIT_DYNAMIC_CALL(CONST-STRING|TMPVAR|CV)

bump year

trailing whitespace removal

first shot remove TSRMLS_* things

Make ZEND_INIT_FCALL keep predcalculted size of necessary stack space in opline->op1.num to avoid its recalculation on each execution.

SEND_VAR_NO_REF optimization

Refactored optimizer (compile different opimizer passes separately, instead of including *.c file)

Fixed incorrect ZEND_INIT_FCALL_BY_NAME -> ZEND_INIT_FCALL conversion

ZEND_INIT_FCALL_BY_NAME can have non-string literal

Add copyright header

Remove old version PHP supports

Implement call_user_func() and call_user_func_array() using special opcodes.
In some rare cases it leads to insignificant changes in error messages.

ZEND_SEND_VAR and ZEND_SEND_VAL specialization

Refactored parameter passing mechanism.

In PHP-5.6 and below each argument passed to user function was copies on VM stack twice.
Now we always have ZEND_INIT_FCALL (or simular) opcode th

Refactored parameter passing mechanism.

In PHP-5.6 and below each argument passed to user function was copies on VM stack twice.
Now we always have ZEND_INIT_FCALL (or simular) opcode that pushes "call frame" on top of VM stack.
"Call frame" is actually the same zend_execute_data structure.
All the following ZEND_SEND instructions push arguments on top of the stack in a way that they directly comes into corresponding CV variables of the called frame. Extra arguments are copied at the end of stack frame (after all CV and TMP variables) on function enterance.

There are two minor incompatibilities:
1) It's not allowed to decalre functions redefining arguments e.g. "function foo($a,$a) {}".
2) func_get_arg() and func_get args() return the current value of argument and not the original value that was sent.

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Use arena allocator for optimizer temporary data structures