- fixes in lmc

some fix in lmc and lconf for WB cache test
1)add more options for single oss with cache and master lmv
2)some fixes for WB cache test script

some fixes for WB cache
1)reorganization for cobd_setup, add cache_real_exp, master_real_exp for real
  connection
2)the fix in lmc for wrong lov_index

some fixes about write back cache.
1)cleanup smfs_init_inode_info
2)miss spin_unlock in class_find_client_obd
3)remove PLG_ALL flags of OBJECTS and LOGS dir on MDS
4)some minor fix in cmobd.sh for WB cache

- fixes and clanups in cmobd.sh and cobd.sh
- changes in lconf about module loading in OSD and MDSDEV.
- fixes in lconf about mount options forming.
- fixes in lmc about client ref managing.
- fixes in lconf about cmobd and cobd setup.