Fixed method call in Preprocessor_Native.php.
Added support for tags containing spaces (r80025), following the same odd order dependant behavior as the php preprocessors.
Extensions shouldn't rely on it. See http://thread.gmane.org/gmane.science.linguistics.wikipedia.technical/51496
As a result of these changes, there is much less worst-case lookahead now.
in_array.{c,h} are now unused.