Disable libsanitizer for intermediate compiler builds

Change-Id: I7b64bd69502955d6e37f525395860db861101734
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Support toolchain tarballs compressed with xz

Change-Id: I7e6f808d548d9ab3ba47ab8517030a1c6a43d90d
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
Merge changes I7e6f80,I7b64bd into linaro-staging

Change-Id: I3978da5ce7e55bc637258f1e8eba742cacbe53b5
toolchain/build: Cleanup pkgversion for axDev GCC

Change-Id: I5d229687914c6f8f8b313ab09c7e70b5633bf3ed