Merge branch 'stable-5.10'

* stable-5.10:
  Prepare 5.10.1-SNAPSHOT builds
  EGit Mylyn Github Connector v5.10.0.202012080955-r

Change-Id: Ibd506e641630bce4200bed564bfff3bb9a212963
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>