Merge pull request #828 from smuzaffar/IB/CMSSW_7_2_X/stable

config tag V05-03-03 used which contains new bigproduct rules
Drop non existing flag for clang.
Merge pull request #829 from ktf/fix-clang-flags

Drop flag unknown to clang.
updated config tag to V05-03-07 which contains nearly complete biglib rules