Add support for DGCrypt CAS.

Release early, release often. The reader should be working although
there maybe some issues with csctapi protocol handling. These can
be worked out once enough people start testing the code.

Thanks to Bruty 12 for the code and testing.

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@8307 4b0bc96b-bc66-0410-9d44-ebda105a78c1