Apply patch to compile gettext on osx.
Merge pull request #911 from cms-sw/patch_gettext_71X

Apply patch to compile gettext on osx.
Revert "Update xrootd to 4.0.2."
Merge pull request #913 from cms-sw/revert-908-xrootd_402_72X

Revert "Update xrootd to 4.0.2."
Merge remote branch 'origin/IB/CMSSW_7_1_X/stable' into IB/CMSSW_7_0_X/stable
Merge remote branch 'origin/IB/CMSSW_7_2_X/stable' into IB/CMSSW_7_0_X/stable