Added a test suite for net/cookie.ss, and fixed some bugs revealed by that test suite
Added a test suite for net/cookie.ss, and fixed some bugs revealed by that test suite

svn: r5010

original commit: 7c7ada45146b43c621ca81a132dd1eadc677d68e

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