toolchain: Update to Linaro 13.04 GCC 4.7.3 toolchain
Fixed Linux 3.0.79 bug stucking, in some cases, at least 2 cpu cores on Max Freq

- Linux 3.0.79 update introduced a bug stucking, in some cases, at least
2 cpu cores on Max Freq !!! => Fixed
Correct md5sum executable on OSX hosts

On OSX hosts the md5sum executable is called md5 instead.

Change-Id: I0b8e3ab137136be6e45fd4b9f77f2c036e8b981a
exynos: Test touch-sensitivity tuning