Increases Tycho version to 0.19.0.

Updates submodules.

Change-Id: Ic1d37e31f10b54b6d9c2847a1ce86d8ae566563e
Reviewed-on: https://git.eclipse.org/r/18079
Reviewed-by: Ken Lee <kle@bsiag.com>
IP-Clean: Ken Lee <kle@bsiag.com>
Tested-by: Ken Lee <kle@bsiag.com>
3 files changed