Merge pull request #452 from smuzaffar/IB/CMSSW_7_1_X/stable

updated config tag to  V05-01-17 which allows to compile cuda .cu files
Merge pull request #453 from smuzaffar/IB/CMSSW_7_1_X/stable

set NVCC to point to cude/bin/nvcc, added CUDA_FLAGS flag
Merge pull request #454 from smuzaffar/IB/CMSSW_7_1_X/stable

moved -fPIC in to CUDA_CFLAGS
Merge pull request #455 from smuzaffar/IB/CMSSW_7_1_X/stable

added dummy cuda tool to create symlink to <tool>/installation pointing ...
updated config tag to V05-01-18 which allows make use of BuildFile level CUDA flags