Increase length of auxdata in the global_policies table.

sql/database-create.sql

@@ -498,7 +498,7 @@ CREATE TABLE foreign_keys (
 
 CREATE TABLE global_policies (
   policy varchar(32) NOT NULL default '',
-  auxdata varchar(64) NOT NULL default '',
+  auxdata varchar(128) NOT NULL default '',
   test varchar(32) NOT NULL default '',
   count int(10) NOT NULL default '0',
   PRIMARY KEY  (policy,auxdata)

sql/database-migrate.txt

@@ -2824,3 +2824,8 @@ last_net_act,last_cpu_act,last_ext_act);
 
         alter table node_types change disktype \
 	        disktype enum('ad','da','ar','amrd') default NULL;
+
+4.12: Increase length of auxdata in the global_policies table.
+
+        alter table global_policies change auxdata \
+                auxdata varchar(128) NOT NULL default '';