- fixes in split:

- fixes in split:
  - split dir may happen no any MDS - fids of slaves and master should be saved in coherence with mdsnum. Do not save fid of slave on mds0 to mea[2] for instance. This is what LMV needs in some cases and this is what may allow to get rid of doing additional fld_lookups in LMV;

  - in cmm_create_slave_objects() pass to cmm_create_remote_obj() last arg as sizeof(*slave_lmv) instead of sizeof(slave_lmv), otherwise edatalen is not correct and mea on slaves get broken;

  - in many split functions, look like this: for (i = 1; i < cmm->cmm_tgt_count + 1; i++) is not correct even for formet solution, it makes it possible to overwrite/access data out of array memory;

  - in cmm_create_slave_objects() memory leak in case of error (OBD_FREE_PTR(lmv) should be added);
  - cleanups, comments.