Moved `net/uri-codec' code from unit to module.
Moved `net/uri-codec' code from unit to module.

original commit: 3f69d4c8e86a9ccd4732e6f4ebb8ec905009c979

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