Added unitary tests for uuid helper funcs
Fixed inclusion of makefiles
Fixed a cast bug in a hex2bin static helper
Added some test DRM UUIDs from DASH IF. Goal is using their test vectors.
Cleaned up indentation
Fixed some additional indents. Fixed build of Crypto plugin for linking uuid helpers lib (typos in LOCAL var names and bad usage of LOCAL_LDLIBS)
Merged makefile from 4.2 branch
Started to add core functionalities in C implem called from C++ classes (integrated in Android Media/Drm framework)
removed backup files