Merge branch 'master' into stable-4.0

* master:
  Add more reports to maven site
  Update project meta-data in pom.xml used for site generation
  Update dependencies to the versions used in target platform
  Update 4.5 target platform to use final Mars Orbit repository
  Compare API changes in clirr report against 3.7.0
  Fix CommitCommand.setOnly()
  Add "src" folder to source folders of org.eclipse.jgit.test
  Improve exception thrown when pull can't find advertised ref
  Silence unchecked conversion warning in TransportSftp
  Silence deprecation warning in WindowCacheConfig
  Silence deprecation warning in DirCacheCheckout
  Fix unchecked conversion warning in MergeFormatter
  Fix hidden field warnings in bundle org.eclipse.jgit
  Close WindowCursor using try-with-resources in UnpackedObject
  Fix WindowCursor memory leak.
  archive: Drop unnecessary empty comments and 'final' qualifiers on locals
  Close 'out' consistently in ArchiveCommand.call
  Fix that exceptions in ReceivePack cause Invalid Channel 101 exceptions
  Better report too large pack-files from PushCommand
  FS: Extract GobblerThread into a private static class
  Add bitmap index misses to PackWriter.Statistics
  Enable public access to SimilarityIndex scoring function
  Add getters to RepoProject.
  Silence unused object warning in MyersDiff
  Silence resource leak warnings where caller is responsible to close
  Silence false potential null pointer access warnings
  Fix potential null pointer access in IndexDiffFilter
  Add tests for ObjectFilter
  Expose Sets helper to tests outside org.eclipse.jgit.api

Change-Id: I34b2bb45f51ed6f52a6bb1215de654ebb2ffde10
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>