Tracin JIT support for FETCH_DIM_W/RW with IS_VAR + IS_INDIRECT first operand.

JIT for FETCH_DIM_W/RW insructions

JIT for IN_ARRAY instruction.

JIT for FETCH_LIST_R

Avoid unnecessary IP initiliaization on trace linking

Cleanup macro/function names

If we don't know the return address, just escape to VM, instead of adding side exit.
Remove unnecessary exception checks.

JIT for FE_FETCH_R

JIT for FETCH_CONSTANT

JIT for FE_FETCH_R

Improved JIT for VERIFY_RETURN_TYPE

Minimal JIT support for JMP_NULL

Eliminate some EX_CALL_INFO() checks

Fixed nested init fcall guards.

More agressive "packed array" guards insertion

Perform type guard checks before IS_UNDEF checks (check IS_UNDEF during deoptimization)

Don't load IP when entering inlined function

Remove useless register allocations

Update operands range information accoring to the taken branches and use this indormation to eliminate useless overflow checks.

Check interrupt only if the link is a part of the loop.

Rename zend_jit_var_may_be_modified_indirectly() into zend_jit_var_may_alias()

Check reference guard once

Use guard to check if array is packed or hash

Prevent negative array index access

Merge branch 'jit_match'

* jit_match:
Support for CASE_STRICT
JIT for MATCH and CASE_STRICT instructions