StringClassNameToClassConstantRector

Other rules in the PHP 5.5 set

• GetCalledClassToSelfClassRector - Change get_called_class() to self::class on final class
• GetCalledClassToStaticClassRector - Change get_called_class() to static::class on non-final class
• PregReplaceEModifierRector - The /e modifier is no longer supported, use preg_replace_callback instead
• StaticToSelfOnFinalClassRector - Change static::class to self::class on final class
• ClassConstantToSelfClassRector - Change __CLASS__ to self::class