Dropping lb prefix from live-build scripts, not needed anymore.

Previously, we needed to keep the lb_* prefix as the scripts
could also be executed standalone. Since the lb wrapper is
mandatory since squeeze, we can drop this now.

bin/lb

@@ -40,7 +40,7 @@ case "${1}" in
 		;;
 
 	*)
-		COMMAND="lb_${1}"
+		COMMAND="${1}"
 		shift
 
 		ENV=""
@@ -74,7 +74,7 @@ case "${1}" in
 			exit 1
 		fi
 
-		Echo "[%s] %s" "$(date +'%F %T')" "${COMMAND} $(echo ${@})"
+		Echo "[%s] %s" "$(date +'%F %T')" "lb ${COMMAND} $(echo ${@})"
 		${ENV} exec "${SCRIPT}" "${@}"
 		;;
 esac