staging: lustre: remove lustre/include/linux/

Merge the contents of lustre/include/linux/lvfs.h into
lustre/include/lvfs.h. Merge lustre/include/linux/lustre_user.h into
lustre/include/lustre/lustre_user.h. Move lustre_compat25.h and
lustre_patchless_compat.h from lustre/include/linux/ to
lustre/include/ and rename lustre_compat25.h to lustre_compat.h.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2675
Reviewed-on: http://review.whamcloud.com/13271


Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Amir Shehata <amir.shehata@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>