Added Autodesk Maya MEL
Fixed MEL Syntax Highlighter

Fixed grouping errors. Added mel.mel file to test.
Changed mel.mel example file.
Updated project.
Added c-style behavior and fold mode / updated mode syntax.

As per Harutyun Amirjanyan's request I made the following two changes:
1) Added c-style behavior and fold mode.
2) Updated mode syntax for mel to current one used by Ace.
Merge pull request #1719 from nbreslow/master

Added support for Autodesk Maya MEL