Add SetSampleRate in JackDriver

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@1695 0c269be4-1314-0410-8aa9-9f06e86f4224

common/JackDriver.h

@@ -194,6 +194,11 @@ class EXPORT JackDriver : public JackDriverClient
         {
             return 0;
         }
+		
+		virtual int SetSampleRate(jack_nframes_t sample_rate)
+		{
+            return 0;
+        }
 
         void NotifyXRun(jack_time_t callback_usecs); // XRun notification sent by the driver