Merge branch 'stable-5.0' into stable-5.1

* stable-5.0:
  Fix ObjectUploadListener#close
  Fix error handling in FileLfsServlet
  ObjectDownloadListener#onWritePossible: Make code spec compatible
  ObjectDownloadListener: Return from onWritePossible when data is written
  Fix IOException when LockToken#close fails

Change-Id: Ib7a63b5144a89c213aff3b32c30a2a6526355e64
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

diff --cc org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java
Simple merge