* split TglBitmap into TglBitmap and TglBitmapData to be able to handle load, save and convert texture date seperatly from the texture object
* updated documentation and examples
- [DH] examples/GrabScreen/GrabScreen.lpi
- [DH] examples/GrabScreen/GrabScreen.lpr
- [DH] examples/GrabScreen/GrabScreen.lps
- [DH] examples/SimpleLoadFromFile/SimpleLoadFromFile.lpi
- [DH] examples/SimpleLoadFromFile/SimpleLoadFromFile.lpr
- [DH] examples/SimpleLoadFromFile/SimpleLoadFromFile.lps
- [DH] examples/TextureFromFunction/TextureFromFunction.lpi
- [DH] examples/TextureFromFunction/TextureFromFunction.lpr
- [DH] examples/TextureFromFunction/TextureFromFunction.lps
- [DH] examples/glBitmapConf.inc