raise exception if DBS3 returns empty block list. Fixes #975
final fix for #975
utility script to create new tarball and release it
will use Federica's dbs3_publisher.py
Merge remote-tracking branch 'upstream/master'
add crab_dbs3publish.py with utility functions to publish in DBS3
make it possible to use DBS3, still not working, but fully backward compatible, still defaults to current DBS2 behavior using same code
frame for DBS3 publication OK, needs to pass file info in right format
better messages
Merge pull request #995 from belforte/master

initial, partial, impementation of publication in DBS3