cms-git-tools: bump version to v0.8.0

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
cmssw,fwlite: prepared for CMSSW_6_2_0

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
Merge pull request #118 from davidlt/IB/CMSSW_6_2_X/stable

[CMSSW_6_2_X] cms-git-tools v0.8.0