Bug 432067: Use --fullpath-after= for unambiguous source file paths.

Change-Id: I58fb1823b9a3b3c61c2ceea62c15145717cee095
Reviewed-on: https://git.eclipse.org/r/35692
Tested-by: Hudson CI
Reviewed-by: Roland Grunberg <rgrunber@redhat.com>
Tested-by: Roland Grunberg <rgrunber@redhat.com>