Fixed: FS#2875 - Punycode domain name is not supports at Crone command line

Till Brehm

2014-02-16 336368dbf1f0598d1383ba4e9a76c129431e8934

 install/sql/incremental/upd_0050.sql

New file
@@ -0,0 +1,2 @@
ALTER TABLE `dns_slave` DROP INDEX `origin`;
ALTER TABLE `dns_slave` ADD CONSTRAINT `slave` UNIQUE (`origin`,`server_id`);