endreq is deprecated, and replaced with endmsg.

Did not replace in log files, or READMEs. Two files which are questionable are
   InnerDetector/InDetAlignAlgs/InDetAlignGenAlgs/src/GeoModelTRT.dev
and
   InnerDetector/InDetRecTools/InDetMultipleVertexSeedFinderUtils/src/PVFindingTrackFilter_cxx


Former-commit-id: 699dba0d