Place license files in package-specific subdir.

Resolves APS-56.
Resolves APS-55.
Resolves APS-51.
Merge pull request #3 in APS/sdsc-roll from feature/APS-56-place-license-files-in-package-specific to master

* commit '004551a721a9b01a831d3a0bc58c87ce7a69e5a1':
  Place license files in package-specific subdir.