fix for #6901
Paletted raster renderer: replace nodata values in a color table copy before the main loop
minor fixes for otb and gdal, and edited some grass descriptions
osgeo4w: switch to GRASS 6.4.3RC2
Keep attribute editor text synchronization from affecting editing

- Cursor no longer jumps to end of text after each edit (on Mac)
- Move QgsStringRelay slot definitions into cpp file
- Fill editable QComboBox with attribute's value in custom forms
- Add validator to editable QComboBox
Add CMake option for custom Python framework on Mac
remove deprecated methods from API
fix tests
Added mechanism for better handling selected features in algorithms
Implemented it in fTools Simplify algorithm
Use start / stopRender for renderer in vector symbology export
Feature style for simple fill
Fetch attributes for symbology export
adapted mmqgis and sextante algs to changes in management of selected features
changed the ungrouped groupid to 0 from NULL
fix python plugins after API cleanup
changed the parent group id for main groups to 0 from NULL
added missing file with JoinAttributes algorithm
Add custom dash dot pattern to symbol layer utils function
Write pen cap and join style to ogr pen
Write offset into ogr pen style