Do not debug always

src/libexec/saturnin-xuris

 SATURNIN_XURIS_UNIQ=true
 SATURNIN_XURIS_CHOICE="${SATURNIN_XURIS_CHOICE:-false}"
 
-FFOO_DEBUG=true
-
 usage() {
     mkusage "[-u|--uniq] [-a|--always-run] [-l|--limit N] [-c|--choose] [-C|--choice-cmd COMMAND]"
 }