Do not pollute fastfoo's FFOO_* namespace

bin/saturnin-revert

     usage_is "[--dry-run] [-c|--connection] domain [snapshot]"
 }
 
-FFOO_DRY_RUN=false
+DRY_RUN=false
 connection="qemu:///system"
 
 while true; do
             shift 2
             ;;
         --dry-run)
-            FFOO_DRY_RUN=true
+            DRY_RUN=true
             shift 1
             ;;
         "")
 
 think "reverting $domain to $snapshot"
 debug "virsh -c "$connection" snapshot-revert $domain $snapshot"
-$FFOO_DRY_RUN || virsh -c "$connection" snapshot-revert $domain $snapshot
+$DRY_RUN || virsh -c "$connection" snapshot-revert $domain $snapshot
 
 think "starting $domain"
 debug "virsh -c "$connection" start $domain"
-$FFOO_DRY_RUN || virsh -c "$connection" start $domain
+$DRY_RUN || virsh -c "$connection" start $domain