Log Message:
Update to 1.2.0:

- Added support for RV620, RV635, and R680.
- Added 2D acceleration for R5xx (including RS6xx), both XAA and EXA.
- Added support for DDIA block (second digital output) on RS690.
- Added support for interlaced modes
- Added additional layers for splitting outputs into encoders and
  transmitters as needed for new hardware.
- Added support for DragonFly BSD.
- Improved RandR corner cases.
- Improved handling of secondary cards.
- Implemented foundation work for future TV support.
- Huge number of bugfixes and minor updates.