job:  #7602  Fixing segfault in return statement in mcmc.  Check that te_aba exists before touching it, because it will not exist when part of code not included in the build.  This is going straight to master.
job:  #7602  Fixing segfault in return statement in mcmc.  Check that te_aba exists before touching it, because it will not exist when part of code not included in the build.  This is going straight to master.

keithbrown/mc,rmulvey/mc,cortlandstarrett/mc,cortlandstarrett/mc,xtuml/mc,leviathan747/mc,john-tornblom/mc,john-tornblom/mc,xtuml/mc,rmulvey/mc,xtuml/mc,leviathan747/mc,leviathan747/mc,lwriemen/mc,xtuml/mc,xtuml/mc,lwriemen/mc,john-tornblom/mc,leviathan747/mc,john-tornblom/mc,lwriemen/mc,lwriemen/mc,cortlandstarrett/mc,keithbrown/mc,rmulvey/mc,cortlandstarrett/mc,cortlandstarrett/mc,xtuml/mc,cortlandstarrett/mc,keithbrown/mc,rmulvey/mc,leviathan747/mc,lwriemen/mc,john-tornblom/mc,rmulvey/mc,keithbrown/mc,keithbrown/mc,john-tornblom/mc,john-tornblom/mc,rmulvey/mc,lwriemen/mc,john-tornblom/mc,keithbrown/mc,leviathan747/mc