Control and control.in cannot both be versioned as control is regularly generated from control.in. We don't seem to be using any useful features of control.in, control.in being auto-generated is banned by Debian policy, and our build system requires control exist. So get rid of control.in. svn path=/trunk/packages/sipb-xen-dev/; revision=894
use cdbs in sipb-xen-dev svn path=/trunk/packages/sipb-xen-dev/; revision=858