SciDAVis - Improvements SVN-temp

http://doc.trolltech.com/4.2/qt4-intro.html#include-syntax
for the correct syntax.
- Fixed several bugs in the scripting code;
Python support now basically works on Windows.
- Added file extensions to ScriptingEnv in order to avoid language-specific
code outside of the language modules.
- Added a Python module with some utility classes and functions.
- Added Lambert's W function to muParserScripting
- Added support for pygsl to qtiplotrc.py
- Fixed bug in saving of Tables (would crash on restore);
added check to Table restore just in case.