RemoteVstPlugin: use SplittedThreading model for Proteus VX

Proteus VX requires SplittedThreading model in order to run properly.
Issues with actually working UI interaction still need to be worked
out although it rather looks like a bug in WINE.

Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
(cherry picked from commit b3c5d498e2)

plugins/vst_base/remote_vst_plugin.cpp

@@ -1,7 +1,7 @@
 /*
  * remote_vst_plugin.cpp - LMMS VST Support Layer (remotePlugin client)
  *
- * Copyright (c) 2005-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2005-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  * 
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -566,6 +566,7 @@ bool remoteVstPlugin::load( const std::string & _plugin_file )
 		case CCONST( 'z', '3', 't', 'a' ):	// z3ta+
 		case CCONST( 'T', 'C', '_', 'S' ):	// Cygnus
 		case CCONST( 'S', 'y', 't', 'r' ):	// Sytrus
+		case CCONST( 'P', 'R', 'V', 'X' ):	// Proteus VX
 			__threadingModel = SplittedThreading;
 			break;