Move sv_unblockplayers telefrag check.  Thanks Amateur Spammer.

git-svn-id: http://odamex.net/svn/root/trunk@3748 b0bcef46-2027-0410-bd56-ab726e9a1d04
Clean up aliases upon exit.

git-svn-id: http://odamex.net/svn/root/trunk@3749 b0bcef46-2027-0410-bd56-ab726e9a1d04
Clean up non-standard uses of exit().

git-svn-id: http://odamex.net/svn/root/trunk@3750 b0bcef46-2027-0410-bd56-ab726e9a1d04