materialsurface flags cleanup


git-svn-id: svn://svn.code.sf.net/p/sauerbraten/code@5061 07af1644-1164-4067-b897-63bf4dc9b748
ent flag cleanup


git-svn-id: svn://svn.code.sf.net/p/sauerbraten/code@5062 07af1644-1164-4067-b897-63bf4dc9b748