cms-common: add support for fc19_aarch64_gcc490

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
Merge pull request #905 from davidlt/cms-common-aarch64

cms-common: add support for fc19_aarch64_gcc490
Merge remote branch 'origin/IB/CMSSW_7_2_X/stable' into IB/CMSSW_7_0_X/stable