- fixes in split about using correct byte order;

- fixes in split about using correct byte order;
- in cmm_split_try() init la_size used in split info messages;
- cleanups and debug in llite close thread related stuff;
- fixes in mdd about link() operation. Fixed deadlock for case when tgt and src is same object. Fixed lost error code after insert name which is possibly existing. Cleanups;
- in mdt_reint_open() use MDT_CROSS_LOCK for opened file in case it is located on remote MDT (by huanghua);
- in mdt_attr_set() fixed wrong goto to label out;
- cleanups in mdt_reint_link(), mdt_reint_unlink(), mdt_reint_rename() (by huanghua);
- fixed lock mode in md_reint_link(). It should LCK_EX instead of LCK_PW;
- fixed deadlock in mdt_reint_link() in case src and dst are same object;
- use MDT_CROSS_LOCK for src in mdt_reint_link() as it maybe located on remote MDT (by huanghua);
- used MDT_CROSS_LOCK for in mdt_reint_rename() as name may be located on remote MDT (by huanghua);
- fixed -ENODATA case in mdt_getxattr_pack_reply(). It should cause err_serious() with errors in console. Cleanups;