Blender Git Loki

RNA
* Added more DNA_color_types.h, starting from patch by Sebastian Skejø.
What's missing is write access to some things like point location,
hard to retrieve the CurveMapping for proper update still..
* Added all datablocks as ID pointer in Main already, now only have to
change the type from ID to the specific type. Also added filename
to Main, which is basically the only non-internal property.
* Fixed setting shadow buffers size in lamps, also ensured it to be a
multiple of 16.