Fixed errors from "information_schema" database on mysql backup script.

mysql/templates/mysql-backup.cron.erb

@@ -17,6 +17,11 @@ tmpwatch -m -f ${MAXAGE} ${DESTDIR}
 DESTDIR=${DESTDIR}/${DATE}
 mkdir -p ${DESTDIR}
 
-for db in `mysql -e 'show databases' -s | egrep -v '^Database$'` ; do
+for db in `mysql -e 'show databases' -s` ; do
+    case ${db} in
+        Database|information_schema)
+            continue
+            ;;
+    esac
     mysqldump --add-drop-table ${db} | gzip > ${DESTDIR}/${db}.${DATE}.gz
 done