- major reworking of carrierroute module

- make exported, user visible interface much more flexible
- add a new table 'carrierfailureroute' for database supported failure routing
- credits for this work goes to Hardy Kahl, hardy dot kahl at 1und1 dot de


git-svn-id: https://openser.svn.sourceforge.net/svnroot/openser/trunk@3789 689a6050-402a-0410-94f2-e92a70836424

lib/srdb1/schema/openser-carrierroute.xml

@@ -10,5 +10,6 @@
 <database xmlns:xi="http://www.w3.org/2001/XInclude">
     <name>carrierroute</name>
     <xi:include href="carrierroute.xml"/>
+    <xi:include href="carrierfailureroute.xml"/>
     <xi:include href="route_tree.xml"/>
 </database>