change rename to move in mirror creation
Support github URLs
Use unzip to unpackage .zip files
Merge branch 'master' into zippackages
Merge pull request #2 in SCALE/spack from zippackages to master

# By Matthew LeGendre
# Via Matthew LeGendre
* commit '67203f17e09da90a62d4ae8105c3de5b73c09951':
  Use unzip to unpackage .zip files
Add str() calls around messages in tty
adding pmgr_collective
Merge branch 'master' of https://lc.llnl.gov/stash/scm/scale/spack
Moving utilities to a common LLNL package.