LU-3974 llite: dentry d_compare changes in 3.11

LU-3974 llite: dentry d_compare changes in 3.11

In the linux 3.11 kernel the d_compare function has
removed passing in any struct inode arguments. This
patch provides support to handle this case.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: I363057e4d0a119ad43a9907ec26e7e0079f7c305
Reviewed-on: http://review.whamcloud.com/7746
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Peng Tao <bergwolf@gmail.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>