prep for 5.4.27 rc1
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  prep for 5.4.27 rc1

Conflicts:
	configure.in
	main/php_version.h
5.5.11RC1 preparation
Fix problem with mysqli_commt()/mysqli_rollback()
fix typo
don't replace with ?, just skip it
Emit a warning in case of unallowed characters. Fix another place this
code is used - reuse
Merge branch 'PHP-5.5' of https://github.com/php/php-src into PHP-5.5