LU-2158 lvfs: Remove cruft from lvfs directory

Some of the unnecessary cruft from within the lvfs directory was
removed by this change. Specifically, the following changes were
made:

 * Removed files:
    * Info.plist
    * lvfs_darwin.c
    * lvfs_internal.h
    * lvfs_userfs.c
 * Cleaned up the autoMakefile.am and Makefile.in files to reflect the
   removed files.

Change-Id: Icc7189912415e96b81dde384491c1948fa4ef06a
Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Christopher J. Morrone <morrone2@llnl.gov>
Reviewed-on: http://review.whamcloud.com/4858
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
LU-1756 kernel: cleanup lustre_compat25.h

1. unused functions:
   ll_bdi_wb_cnt()
2. call bdi_init/bdi_destroy directly
3. call add_to_page_cache_lru directly
4. fix a typo of ll_pagevec_init

Signed-off-by: Peng Tao <tao.peng@emc.com>
Change-Id: I0ce799bc5aad70279a652cf911b9880abcc74194
Reviewed-on: http://review.whamcloud.com/4656
Tested-by: Hudson
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
LU-1716 test: Test holder for b2_1 only test.

A b2_1 only test is needed. Add it as a comment so as not to
reuse it in the future.

Signed-off-by: Keith Mannthey <keith.mannthey@intel.com>
Change-Id: I3caf15d1369e73b8104194561b73929561d2dfe9
Reviewed-on: http://review.whamcloud.com/4690
Tested-by: Hudson
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>