Fix for 293686 . signver has command-line options with optional arguments. r=nelsonb
Fix for 293686 . signver has command-line options with optional arguments. r=nelsonb

ekr/nss-old,nmav/nss,nmav/nss,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old