2018-03-11 Fred Gleason <fredg@paravelsystems.com>

* Converted ripcd(8) to use RDApplication.
	* Documented a 'Notification' message type in
	'docs/apis/notification.xml'.
	* Added an 'RDMulticaster' class.
	* Added an 'mcast_recv_test' program in 'tests/'.
	* Added a 'SYSTEM.NOTIFICATION_ADDRESS' field to the database.
	* Incremented the database version to 276.
	* Added an 'Mcast Address for Notifications' control to the
	'System-Wide Settings' dialog in rdadmin(1).
	* Implemented the 'Process Notification' ['ON'] command in
	ripcd(8).
	* Added an 'RDRipc::sendNotification()' method.
	* Added an 'RDRipc::notificationReceived()' signal.

utils/rdrevert/rdrevert.cpp

@@ -259,6 +259,10 @@ void MainObject::Revert(int schema) const
   case 275:
     Revert275();
     break;
+
+  case 276:
+    Revert276();
+    break;
   }
 }
 
@@ -825,6 +829,19 @@ void MainObject::Revert275() const
 }
 
 
+void MainObject::Revert276() const
+{
+  QString sql;
+  RDSqlQuery *q;
+
+  sql=QString("alter table SYSTEM drop column NOTIFICATION_ADDRESS");
+  q=new RDSqlQuery(sql,false);
+  delete q;
+
+  SetVersion(275);
+}
+
+
 int MainObject::GetVersion() const
 {
   QString sql;
@@ -871,6 +888,7 @@ int MainObject::MapSchema(const QString &ver)
   version_map["2.17"]=268;
   version_map["2.18"]=272;
   version_map["2.19"]=275;
+  version_map["2.20"]=276;
 
   //
   // Normalize String

utils/rdrevert/rdrevert.h

@@ -71,6 +71,7 @@ class MainObject : public QObject
   void Revert273() const;
   void Revert274() const;
   void Revert275() const;
+  void Revert276() const;
   int GetVersion() const;
   void SetVersion(int schema) const;
   int MapSchema(const QString &ver);