host, csqc: Remove cl.csqc_paused. Use new global host.paused instead.

host, csqc: Remove cl.csqc_paused. Use new global host.paused instead.

This removes some client/server-only code in the client/server frames.
This also cleans up the cl struct a bit by only having one source of
knowing if we should pause for both CSQC and opening the console or menu

These changes will help eventually move the client and server frame code
to their own functions (CL_Frame and SV_Frame respectively).

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12800 d7cf8633-e32d-0410-b094-e92efae38249