nfs-utils: Correct exit-code from unmount when fs is busy
This update fixes the following issue for nfs-utils:
- bnc#770962: mount-exit-code.fix: Correct exit-coe from unmount when fs is busy - allows autofs to work correctly
- Submitted by Stephan Kulow (coolo)
Fixed bugs
bnc#770962
umount.nfs return code on busy volumes