Set VisTrails branch based on UVCDAT clone URL and branch

^.*uvcdat.git:
  master => uvcdat-master
  release => uvcdat-release

^.*uvcdat-devel.git:
  uvcdat-next
Use git rev-parse to get remote for branch

Rather than relying on origin being where branch came from use
git rev-parse to see which remote the branch exists on.
Merge branch '400-vistrail-checkout-release' into release