b=14230
i=alex.zhuravlev
i=h.huang

following patch removes 1.6 dead code from head branch and moves some
function to respective layers.

diffstat:

 b/lustre/include/lustre_mds.h |   70 -
 b/lustre/mdd/mdd_lov.c        |  180 ++
 b/lustre/mds/Makefile.in      |    3
 b/lustre/mds/handler.c        | 2571 ------------------------------------------
 b/lustre/mds/mds_fs.c         |  654 ----------
 b/lustre/mds/mds_internal.h   |  209 ---
 b/lustre/mds/mds_log.c        |   84 -
 b/lustre/mds/mds_lov.c        |  295 ----
 b/lustre/mdt/mdt_handler.c    |  116 +
 b/lustre/mdt/mdt_recovery.c   |   53
 lustre/mds/commit_confd.c     |   98 -
 lustre/mds/mds_join.c         |  508 --------
 lustre/mds/mds_lib.c          |  488 -------
 lustre/mds/mds_open.c         | 1533 -------------------------
 lustre/mds/mds_reint.c        | 2419 ---------------------------------------
 lustre/mds/mds_unlink_open.c  |  287 ----
 lustre/mds/mds_xattr.c        |  358 -----
 17 files changed, 369 insertions(+), 9557 deletions(-)