Merge branch 'rr/epl'

Merge branch 'rr/epl'

* rr/epl: (33 commits)
  Relicense the Eclipse plugin under the EPL
  Switch jgit library to the EDL (3-clause BSD)
  Refactor WindowCache to allow dynamic changes in configuration
  Consolidate the string type decoding into Constants
  Use the InflaterCache within UnpackedObjectLoader
  Extract the Inflater caching from WindowCache
  Always use a single WindowCache for the entire JVM
  Don't get the FD in WindowedFile.onOpen
  Fix minor formatting glitch in WindowCache
  Skip pack-*.idx which has no corresponding pack-*.pack file
  Implement fetch support for TagOpt AUTO_FOLLOW, FETCH_TAGS
  Allow FetchConnection users to see if tag following was used
  Only request advertised include-tags if we want tags
  Add TagOpt support to Transport
  Add tagopt parsing support to RemoteConfig
  Implement "quickfetch" hack as part of our standard fetch behavior
  Create a show-ref command line for jgit
  Refactor Repository's ref reading/writing for aggressive caching
  Cleanup error handling when reading from packed-refs
  Don't throw Error wrapping IOException from packed-refs read
  ...