Fix typo in test.xml making test suite not be found.
Enable more warnings and disable unexported package warning to get clean
build in the workbench.
Remove leftovers from previous work in another directory.

Change-Id: If98ce58184b54dc0e00be81b7a5c135e5fb45bce
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>