updated config tag to V05-01-24 which contains a fix for Boost IO Serialization
Merge pull request #665 from smuzaffar/IB/CMSSW_7_0_X/stable

updated config tag to V05-01-24 which contains a fix for Boost IO Serialization
Drop -fipa-pta flag.
Pick up latest clang.
Merge pull request #666 from ktf/align-clang-latest

Align clang latest
Merge remote branch 'origin/IB/CMSSW_7_0_X/stable' into IB/CMSSW_7_0_X/stable
Merge remote branch 'origin/IB/CMSSW_7_1_X/stable' into IB/CMSSW_7_0_X/stable