Merge branch 'master' into stable-4.4

Merge branch 'master' into stable-4.4

* master:
  JGit CLI: allow to call git init with specific directory
  Redirect all Show output to outs
  Support git config [include] section with absolute path(s)
  Added filter for merge and non-merges commits.
  [findBugs] Prevent potential NPE in FS_POSIX.readUmask()
  [findBugs] Fix calculation of host header in SignerV4
  Update Orbit repository to S20160518051658 for Neon RC2
  Fix StashApply regarding handling of untracked files
  GC should not pack objects only referenced by ORIG_HEAD,...
  Make sure to overwrite files when "reset --hard" detects conflicts
  Allow setting FileMode to executable when applying patches in
    ApplyCommand
  Fix config value get to return last instead of 1st just like git
  Remove UTF-8 checking duplication in Config lib subclasses
  Update Maven plugins
  Fix type parameter in javadoc in TestRepository.delete(String ref)
  TestRepository: Add delete() method
  Make BaseReceivePack.setAtomic public
  ReceivePack: Pass atomic setting from client to BatchRefUpdate

Change-Id: I5c9c5b7ccb23fb48b44b3da10b2c5d876d043d24
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>