Remove static allocator

We didn't even compile this file anymore
Remove zend_dynamic_array

This was introduced back in 2000 to test a new hashtable
implementation and is no longer used.
Fix tests/serialize/bug64146.phpt

The var hash now retains a reference to its elements, to ensure
that addresses are not reused.

Furthermore the var hash now only stores objects and references
and directly uses their pointer as key, thus making serialization
about two times faster.
Test some additional cases for constexpr evaluation
Test error conditions for ct class const refs

And fix a bug found while doing so...
Test a few more error conditions in the compiler
Simply make_printable_zval

it's possible to remove make_printable_zval at all
but it will be a API break
Fixed typo
It is not likely a string
Make internal function names to be interned strings
Allocate copies of internal functions inherited in user classes at CG(arena), instead of permanent heap (malloc).
PR 837: Fixed typo in php.ini-development and php.ini-production

Fixed typo in comment for 'mbstring.detect_order'
Merge branch 'PHP-5.6'

* PHP-5.6:
  Fixed typo
Use zval_ptr_dtor_nogc() to free IS_TMP_VAR operands.
Removed ZEND_SWITCH_FREE opcode (ZEND_FREE used instead).
Merge branch 'master' of git://github.com/php/php-src