Merge branch 'master' into stable-3.2

Merge branch 'master' into stable-3.2

* master:
  Implement rebase.autostash
  CLI status should support --porcelain
  More helpful InvalidPathException messages (include reason)
  Fix IgnoreRule#isMatch returning wrong result due to missing reset
  Fix exception on conflicts with recursive merge
  Add pgm test for checkout of existing branch with checkout conflict
  Fix broken symbolic links on Cygwin.
  Do not allow non-ff-rebase if there are uncommitted changes
  Manage CheckoutConflictException in pgm
  Fix handling of file/folder conflicts during a checkout
  Mention null return in Javadoc of Config#getString
  Fix applying stash on other commit
  Use static factory methods instead of overloaded constructors
  Break up GCTest to run in parallel
  Modify T0004_PackReaderTest to use existing pack
  Move SampleDataRepositoryTestCase to org.eclipse.jgit.test
  Support running from JARs in JGitTestUtil
  Cache SimpleDateFormat in GitDateParser per locale
  Fix FIXUP error for blank lines in interactive rebase
  Fix parsing Rebase todo lines when commit message is missing
  Add close() method to API
  Update Jetty to 7.6.14.v20131031
  Document that path parameters should use '/' as separator
  Improve Javadoc for typeHint parameter
  Do not update the ref hot bit when checking isIndexLoaded
  Don't delete .idx file if .pack file can't be deleted

Change-Id: I02abfc09000d0fe9bdf4331c65bec7046f586179
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>