release/21.0.24

James Beacham

@jbeacham

42f3afd4 · Merge branch 'BMGChambers_20150501' into '21.0' · May 18, 2017

This is the latest build of the Tier-0 data-taking branch that fixes MDT cabling maps.  Note that this is a frozen Tier-0 breaking tag with respect to outputs from 21.0.23.