pkg/kamailio/centos: Updated rel in .spec in preparation for 4.1.0 release

pkg/kamailio/centos/6/kamailio.spec

@@ -1,6 +1,6 @@
 %define name	kamailio
 %define ver	4.1.0
-%define rel	pre1.4%{dist}
+%define rel	0%{dist}