Fixed wxMemoryOutputStream (it wasn't working at all)

Fixed wxStreamBuffer to support features of wxMemoryOutputStream
wxMMedia2 updates (various fixes)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4406 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/wxMMedia2/lib/sndcodec.cpp

@@ -36,3 +36,8 @@ void wxSoundStreamCodec::SetDuplexMode(bool duplex)
 {
   m_sndio->SetDuplexMode(duplex);
 }
+
+wxUint32 wxSoundStreamCodec::GetBestSize() const
+{
+  return m_sndio->GetBestSize();
+}