Merge pull request #2 from smuzaffar/master

for CMSSW_4 series use runtests instead of unittests
scram b runtests does not work with new validation proceedure, we need to back port cmssw-config changes for unittests if we want unittests working for 4.X.Y releases
Add 1h timeout for single jobs.
Add leading space.
Use --command to pass options
Usual amount of juggling trying to pass options correctly from one script to the other...
Get SLHC relvals up and running.
use CMSSW_VERSION env variable instead of release cycle to override the RelValargs for SLHC releases