Revert "afs: Use 64-bit inode numbers"

Revert "afs: Use 64-bit inode numbers"

This reverts commit e1e008338639d6cc0d836ff8079e6fb42021ab9e. Using
64-bit inode numbers can make AFS largely inaccessible to 32-bit
programs that are not compiled with large file support, since the
inode number we provide is not representable in a 32-bit struct stat.
Using 64-bit inode numbers thus can break quite a few programs, and
has little benefit, so don't do it.

Change-Id: Ia482ac2864601b5c56a4259432529d14981f4a1a
Reviewed-on: http://gerrit.openafs.org/5048
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>