preliminary osx makefile support


git-svn-id: http://svn.code.sf.net/p/sauerbraten/code@4933 07af1644-1164-4067-b897-63bf4dc9b748
silence some warnings


git-svn-id: http://svn.code.sf.net/p/sauerbraten/code@4934 07af1644-1164-4067-b897-63bf4dc9b748
deprecation cleanup


git-svn-id: http://svn.code.sf.net/p/sauerbraten/code@4935 07af1644-1164-4067-b897-63bf4dc9b748