-Reformat r_intrin.h for better readability.

git-svn-id: http://odamex.net/svn/root/branches/rend32@3827 b0bcef46-2027-0410-bd56-ab726e9a1d04
-More accurately determine if an upper or lower wall texture should be rendered by using the linedef's original vertices for comparison rather than the the vertices after frustum clipping. This prevents thin bands of texturing at the base of slopes.

git-svn-id: http://odamex.net/svn/root/branches/rend32@3828 b0bcef46-2027-0410-bd56-ab726e9a1d04
Update codeblocks client project

git-svn-id: http://odamex.net/svn/root/branches/rend32@3829 b0bcef46-2027-0410-bd56-ab726e9a1d04