xfsprogs: add dtype support to mkfs and db

xfsprogs: add dtype support to mkfs and db

Now that we have an extra field in the dirent, add support into
xfs_db to be able to view it when looking at directory structures.

Add support to mkfs to create filesystems with filetype - we'll
always set it on CRC enabled filesystems so all new v5 filesystems
will have this functionality enabled.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>