cryptsetup: Update to latest version and use openssl as crypto backend

Cryptsetup with the command luksOpen failed with the error message:
device-mapper: status ioctl failed: Permission denied

The error comes from libgcrypt with drops root privileges if it is
linked with libcap support [1]. Update cryptsetup to latest version,
add PACKAGECONFIG for crypto backend selection (openssl / gcrypt)
and change the default crypto backend to openssl as libgcrypt states
the drop root privileges behaviour as a feature [2].

The license was updated to GPLv2 with OpenSSL exception.

Update the RRECOMMENDS to be conistent with the package names.

[1] http://code.google.com/p/cryptsetup/issues/detail?id=47
[2] https://bugs.g10code.com/gnupg/issue1181



Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>