added dummy cuda tool to create symlink to <tool>/installation pointing to hard coded value /usr/local/cuda. update cuda-toolfile to make use of new dummy cuda tool
Merge pull request #455 from smuzaffar/IB/CMSSW_7_1_X/stable

added dummy cuda tool to create symlink to <tool>/installation pointing ...
Merge remote branch 'origin/IB/CMSSW_7_1_X/stable' into IB/CMSSW_7_0_X/stable