Python 2.7.5c: correct build of readline module under Mac OS X.
ROOT 5.34.12, as requested by NOvA.
The mu2e qualifier has been retired: Mu2e collaborators should use the e4-qualified versions of ROOT and the art suite. The only difference between the two variants was the enabling of the "roofit" package. Since it does not require any new external packages, roofit is now built as part of the "vanilla" ROOT package.