ENH: Script to verify the halotags

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/rru2/branches/rru2-memfix-cosmotools/cosmotools@1309 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
Merge remote-tracking branch 'github/master' into svn-clone