add history::Database stub, move catalog::Sql statement to sqlite namespace
add stub swissknife commands "tag" and "rollback"
support for adding, listing, removing tags (named snapshots)
save trunk-previous in tag list
store update channels in manifest
add new repositories to cvmfs-release package
tweaking error reporting in cloud instance handler
Merge branch 'master' into history
make channel tops an ordered list carrying the revision order
Merge branch 'master' into history
Merge branch 'master' into history
remove unused function
add rollback command to cvmfs_server
Merge branch 'master' into history
add option to verify a specific repository tag in cvmfs_server check
Merge branch 'master' into cloud_testing
add history support to cvmfs_pull
add possibility to mount specific repository tag (CVMFS_REPOSITORY_TAG))
Merge branch 'master' into history
Merge branch 'master' into history