DEVEL now uses IB/CMSSW_7_1_X/next
Merge pull request #672 from smuzaffar/IB/CMSSW_7_0_X/stable

updated config tag to V05-01-25 which has a fix patch releases (override...
Move clang builds to stable.
Patch xrootd client.
Merge pull request #683 from degano/xrootd_patch_70X

Patch xrootd client.
updated config tag to V05-01-27: which find condformats_serialization_generate.py in CMSSW_FULL_BASE_RELEASE too