Patches split_parser branch - fixed one bug in include tag and added include_path

Hello.

RainTPL just stopped working with include tags. So I fixed the problem and added new option "include_path" that will allow searching for template to include in many diffirent paths. It will not slow down template engine as it's only doing once (when template is going to be compiled).

I will add also two configuration options "force_compile" and "dont_compile". The first one will be for debugging purposes (I have save a template file everytime I want to debug parser... it's annoying) and the second one will allow compiling templates from crontab.