Added pragma to shut VS 6 up.

examples/osgsimulation/osgsimulation.cpp

@@ -1,3 +1,21 @@
+#ifdef WIN32
+/////////////////////////////////////////////////////////////////////////////
+// Disable unavoidable warning messages:
+
+//  4103: used #pragma pack to change alignment
+//  4114: same type qualifier used more than once
+//  4201: nonstandard extension used : nameless struct/union
+//  4237: "keyword" reserved for future use
+//  4251: class needs to have dll-interface to export class
+//  4275: non DLL-interface class used as base for DLL-interface class
+//  4290: C++ Exception Specification ignored
+//  4503: decorated name length exceeded, name was truncated
+//  4786: string too long - truncated to 255 characters
+
+#pragma warning(disable : 4103 4114 4201 4237 4251 4275 4290 4503 4335 4786)
+
+#endif // WIN32
+
 #include <osgProducer/Viewer>
 
 #include <osg/Group>