Update build to Tycho 0.17
Update build to Tycho 0.17

Change-Id: Ifb9fe0d404339867451b529da7dce15f8a1d337e
Signed-off-by: Matthias Sohn <446760a3fbea85cd5f8f4f5c3de304fe3a38014f@sap.com>
paulvi/egit,SmithAndr/egit,paulvi/egit,SmithAndr/egit,collaborative-modeling/egit,wdliu/egit,wdliu/egit,collaborative-modeling/egit,blizzy78/egit