Merge branch 'stable-4.10' into stable-4.11

* stable-4.10:
  Prepare 4.9.10-SNAPSHOT builds
  JGit v4.9.9.201903122025-r
  Prepare 4.7.9-SNAPSHOT builds
  JGit v4.7.8.201903121755-r
  Prepare 4.5.7-SNAPSHOT builds
  JGit v4.5.6.201903121547-r
  Check for packfile validity and fd before reading
  Move throw of PackInvalidException outside the catch
  Use FileSnapshot to get lastModified on PackFile
  Include size when comparing FileSnapshot
  Do not reuse packfiles when changed on filesystem
  Silence API warnings for new API introduced for fixes

Change-Id: Ic66dc00455c05f7627919f682a7221ffeef1629d
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

diff --cc org.eclipse.jgit/.settings/.api_filters
Simple merge

diff --cc org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectory.java
Simple merge

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