Add SR2 raw format support
Add the basic definitions for the Sony DSC-R1
Crop out some empty data
Fix a typo in a comment
Blacklist the .SR2 extension from libraw
Merge pull request #576 from pedrocr/rawspeed-r1-support

Rawspeed support for the Sony DSC-R1
Merge branch 'master' into rawspeed-orf-support

Conflicts:
	src/external/rawspeed/RawSpeed/RawDecoder.cpp
	src/external/rawspeed/RawSpeed/RawDecoder.h