NH-3543 - Add support for multi query to DB2 Driver

Fixes #874

Author: brendenweel

src/NHibernate/Driver/DB2Driver.cs

@@ -1,4 +1,5 @@
 using System;
+using NHibernate.Engine;
 
 namespace NHibernate.Driver
 {
@@ -40,5 +41,26 @@ public override bool SupportsMultipleOpenReaders
 		{
 			get { return false; }
 		}
+
+		/// <summary>
+		/// Gets a value indicating whether the driver [supports multiple queries].
+		/// </summary>
+		/// <value>
+		/// <c>true</c> if [supports multiple queries]; otherwise, <c>false</c>.
+		/// </value>
+		public override bool SupportsMultipleQueries
+		{
+			get { return true; }
+		}
+
+		/// <summary>
+		/// Gets the result sets command.
+		/// </summary>
+		/// <param name="session">The implementor of the session.</param>
+		/// <returns></returns>
+		public override IResultSetsCommand GetResultSetsCommand(ISessionImplementor session)
+		{
+			return new BasicResultSetsCommand(session);
+		}
 	}
-}
+}