Use master-agnostic zend_is_true checks
Merge branch 'PHP-5.6'

* PHP-5.6:
  Use master-agnostic zend_is_true checks

Conflicts:
	ext/openssl/xp_ssl.c
Remove #if PHP_VERSION_ID version checks
Remove #if PHP_VERSION_ID version checks
Merge branch 'PHP-5.6'

* PHP-5.6:
  Remove #if PHP_VERSION_ID version checks

Conflicts:
	ext/openssl/xp_ssl.c
Merge remote-tracking branch 'origin/master' into str_size_and_int64