drdr props to ignore Windows-only files; svn:ignore; make plot/run-tests.ss independent of where they are running from
drdr props to ignore Windows-only files; svn:ignore; make plot/run-tests.ss independent of where they are running from

svn: r16346

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket