and crypt_get_active_device() to API.
* Rewrite all implementations in cryptsetup to new API.
* Fix luksRemoveKey to behave as documented (do not ask
for remaining keyslot passphrase).
* Add more regression tests for commands.
git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@360 36d66b0a-2a48-0410-832c-cd162a569da5