MeterModel: clear global automation patterns in reset()

When resetting a MeterModel we also have to clear global automation
patterns attached to it. Fixes bug with persistent automation data on
e.g. time signature widget when clearing project.
(cherry picked from commit 23a3efcac0)

src/core/MeterModel.cpp

@@ -1,7 +1,7 @@
 /*
  * MeterModel.cpp - model for meter specification
  *
- * Copyright (c) 2008-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2008-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -24,6 +24,7 @@
 
 
 #include "MeterModel.h"
+#include "AutomationPattern.h"
 
 
 MeterModel::MeterModel( ::Model * _parent ) :
@@ -51,6 +52,9 @@ void MeterModel::reset()
 {
 	m_numeratorModel.setValue( 4 );
 	m_denominatorModel.setValue( 4 );
+
+	AutomationPattern::globalAutomationPattern( &m_numeratorModel )->clear();
+	AutomationPattern::globalAutomationPattern( &m_denominatorModel )->clear();
 }