Optimized fast_memcpy with AVX instructions

Great thanks to welting for helping :)

Moved "zval.u2.cache_slot" into free room of "zend_op"

Changed CATCH instruction format (extended_value moved into op2, op2 into result, result into extended_value)

Access HashTable.u.flags through HT_FLAGS() macro.

Get rid of IS_TYPE_COPYABLE.

A cheaper way to reset type flags.

Cleanup (at persistence stage we may get only "user" functions; regular op_arrays can't be referenced from different places)

year++

year++

year++

Use GC_FLAGS_SHIFT in a few more places

Rather than hardcoding 8.

Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-count

Encapsulate reference-counting primitives.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-counting (disabled for now).
These macros are going to be used to eliminate race-condintions during reference-counting on data shared between threads.

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Constify key access for hash and formal params

Keys created in shared memory and won't be modified and are free'd on
restart. Otherwise, keys passed to functions should not be modified,

Constify key access for hash and formal params

Keys created in shared memory and won't be modified and are free'd on
restart. Otherwise, keys passed to functions should not be modified,
too.

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AST don't have to be COPYABLE anymore.

Always use IS_CONSTANT_AST (IS_CONSTANT is removed).

Changed zend_ast_ref structure to use only one allocation, removing dichotomy between heap/arena ASTs.

Refactored recursion pretection

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

Implement jumptable optimization

Interned strings unification for TS/NTS

Hereby, interned strings are supported in thread safe PHP. The patch
implements two types of interned strings

- interning per process, st

Interned strings unification for TS/NTS

Hereby, interned strings are supported in thread safe PHP. The patch
implements two types of interned strings

- interning per process, strings are not freed till process end
- interning per request, strings are freed at request end

There is no runtime interning.

With Opcache, all the permanent iterned strings are copied into SHM on
startup, additional copying into SHM might happen on demand.

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Merge branch 'PHP-7.1'

* PHP-7.1:
Fixed bug #73983 crash on finish work with phar in cli + opcache

Merge branch 'PHP-7.0' into PHP-7.1

* PHP-7.0:
Fixed bug #73983 crash on finish work with phar in cli + opcache

Fixed bug #73983 crash on finish work with phar in cli + opcache

The file_cache_only option causes the storage to be per process,
furthermore the arena is destroyed per request. Thus, ze

Fixed bug #73983 crash on finish work with phar in cli + opcache

The file_cache_only option causes the storage to be per process,
furthermore the arena is destroyed per request. Thus, zend_string's
can't survive between request and the permanent flag should not
be set. This is already done with the file cache part, but the
persistency part is used in various scenarios and should respect
this case as well. In this particular bug, the pcre pattern cache
needs to survive between requests and uses pattern strings as hash
keys. One more case relevant here would be various situations where
the flow disables the use of shared memory.

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Introduced "zend_type" - an abstraction for type-hinting representation.

Update copyright headers to 2017