better process helper, quote characters that might cause problems with shell quotes
better process helper, quote characters that might cause problems with shell quotes

svn: r8455

original commit: c2c950a2b99dc787e61691c971b468b559b656c3

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