The default OpenGL ortho matrix looks down the negative Z axis, not

the positive one.

I could have fixed this by reversing them at the glOrtho call, but I figured
it'd be cleaner to just switch these.  It also makes it match the 3d projection.

stepmania/src/CourseContentsFrame.cpp

@@ -143,7 +143,7 @@ void CourseContentsFrame::DrawPrimitives()
 	DISPLAY->EnableZBuffer();
 
 	// write to z buffer so that top and bottom are clipped
-	m_quad.SetZ( -1 );
+	m_quad.SetZ( 1 );
 
 	RectI rectBarSize(-(int)CONTENTS_BAR_WIDTH/2, -(int)CONTENTS_BAR_HEIGHT/2, (int)CONTENTS_BAR_WIDTH/2, (int)CONTENTS_BAR_HEIGHT/2);
 	m_quad.StretchTo( rectBarSize );