Description of problem:Mageia 2 alpha 1 can't install with encrypted partitions

It would appear that Mageia 2 alpha 1 can't install on encrypted partitions.

The reason for this is that the cryptsetup utility is missing (it even pops up a window to say this).

Yes, this is a minor problem at this time but it should be fixed so that it's not forgotten later on.


Version-Release number of selected component (if applicable):

Mageia 2 alpha 1


How reproducible:

Every time.


Steps to Reproduce:
1. Run installer
2. Create an encrypted partition to install on
3. It fails and tells you that it was because cryptsetup was installed.


Additional notes:

The rules for when you should be permitted to encrypted filesystems are easy to get wrong (c.f. Mandriva 2011).

Essentially they are:
 * Everything can be encrypted
 * Except /
    * UNLESS /boot exists, which can never be encrypted.

The above was added to make sure we don't fall into that trap once cryptsetup is available in the installer.