Features:
1. Editing:
* Polygon duplication
* Support for submodel
* Commandline 'filename' is optional, also allows to enter filename via GUI
* Multiple pies loading
* Merging of multiple pies into one file
* Support for 3DTRANS animation (oil derik)
* Support for 3DFRAMES animation (cyborg)
2. Load and Save:
* Creation, Load, Save of ani animation
* Submodel add and remove
3. Model View:
* Optional VBO for polygon and grids rendering
* VBO cache for grids
* Separated frames in animation rendering
* Animation play
4. GUI:
* Improved overall GUI usability
5. Fixes:
* Fixed various bugs in GUI creation strings
git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@3171 4a71c877-e1ca-e34f-864e-861f7616d084