aklog weak warning

aklog weak warning

make aklog guess when you need to enable weak crypto

Reviewed-on: http://gerrit.openafs.org/3209
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 93ab13cbf3cfee30524f63925a11a0ab0c55d600)

Change-Id: I48b0f6c40a2a6b989bfc859267b080e31a6ffc3c
Reviewed-on: http://gerrit.openafs.org/3988
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>