-Rework BlastColumn to draw to the bottom row of the screen.

git-svn-id: http://odamex.net/svn/root/branches/rend32@3725 b0bcef46-2027-0410-bd56-ab726e9a1d04
-Fix a gcc release-build compilation issue.

git-svn-id: http://odamex.net/svn/root/branches/rend32@3726 b0bcef46-2027-0410-bd56-ab726e9a1d04