Use rk_mkdir from libafsroken

The latest import added it; add it to the build and export list.

Reviewed-on: http://gerrit.openafs.org/10046
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <simonxwilkinson@gmail.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit a25434430815ebf020407fdfaedd46db94475412)

Change-Id: Ia1c680ec8a7f8be09a2d231e2501469362f4371d
Reviewed-on: http://gerrit.openafs.org/10059
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
hcrypto: Add exports for more crypto algorithms

Export some additional algorithms so we can make use
of them elsewhere in the code.

Reviewed-on: http://gerrit.openafs.org/10047
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <simonxwilkinson@gmail.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 09912a3fcc9ae5f0995fb47aedc3b7279b663ad2)

Change-Id: I958101034a3880d01b05eef21834cfcb2ab071fe
Reviewed-on: http://gerrit.openafs.org/10060
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>