(#3629) Full port to RHEL 7 (beta).
Merge branch 'V8_0-branch' of ssh://ingwe.cs.wisc.edu/p/condor/repository/CONDOR_SRC into V8_0-branch
(#3629)  Enable LIGO test for RHEL 7.
(#3629)  Unbreak the build.
Version history for #4141 and #4148 (children of #3386)
(#3629)  Merge RHEL 7 full port.
Merge branch 'master' of ssh://ingwe.cs.wisc.edu/p/condor/repository/CONDOR_SRC
Version history for new condor_gpu_discovery tool. #3386