Merge the SLE11-SP3 branch to Factory

- refactored the last change following a late review
  (FATE#312242, bnc#820989)
- AutoYaST: fix to allow NFS4 options (FATE#312242, bnc#457981)
- added option for enabling NFS4 GSS (FATE#312242, bnc#681190)
- Added minorversion=1 for pNFS, NFS4.1 (FATE#312259).
- enable compiling, testing, packaging from the WC (bnc#790490)