- Changed interpretation of packet size reponses of 0 from meaning "don't
  care" to "unsupported".
- Changed block size in libpit to mean either block size or block offset.
- Updated MSVC projects to MSVC2012.
- Changed from libusb-1.0 to libusbx.
- Upgraded to C++11 (defined as C++0x for backwards compatibility with gcc < 4.7).
Added Galaxy Camera download mode identifier (apparently).