LU-2880 ldiskfs: rename patches for consistency

LU-2880 ldiskfs: rename patches for consistency

Rename the ext4_data_in_dirent.patch, ext4_pdirop.patch, and
ext4_extra_isize.patch files to be ext4-data-in-dirent.patch,
ext4-extra-isize.patch and ext4-pdirop.patch respectively.
This is more consistent with all of the other patches in the
series, and avoids missing these files with tab completion.

Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: I92125f09284e23ab08d5e9f8658e68416bde025f
Reviewed-on: http://review.whamcloud.com/6411
Tested-by: Jenkins
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>