configure: require libblkid

We can't support block device access (which is the reason for xfsprogs
to exist) without blkid.  Make it a hard requirement and remove the
stubs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
3 files changed