LU-6401 headers: Move functions out of lustre_idl.h

LU-6401 headers: Move functions out of lustre_idl.h

Migrate functions
lma_to_lustre_flags, lustre_to_lma_flags
set/get_mrc_cr_flags
ldlm_res_eq
ldlm_extent_overlap
ldlm_extent_contain
ldlm_request_bufsize
rec_tail
agent_req_in_final_state
lustre_print_user_md
all PTLRPC dump_* functions
lovea_slot_is_dummy

Delete unused
lmv_mds_md_stripe_count

Signed-off-by: Ben Evans <bevans@cray.com>
Change-Id: If65e9f63b727889f4952d5c326b18356cc4dae9d
Reviewed-on: http://review.whamcloud.com/21484
Reviewed-by: Frank Zago <fzago@cray.com>
Tested-by: Jenkins
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>