bodhi: use the right exit codes

When an update is found and the user does not want to continue in
reporting, abrt-bodhi must exit with EXIT_STOP_EVENT_RUN to notify
the parent process that no next event should be run.

Closes rhbz#1046140

Signed-off-by: Jakub Filak <jfilak@redhat.com>
make rpm: add $RPM_FLAGS aux variable

Signed-off-by: Jakub Filak <jfilak@redhat.com>