Various MSVC patches.

src/Cockpit/panel.cxx

@@ -48,7 +48,10 @@
 #define WIN_W 1024
 #define WIN_H 768
 
-#ifdef NONE
+#ifdef defined( NONE ) && defined( _MSC_VER )
+#  pragma message( "A sloppy coder has defined NONE as a macro!!!" )
+#  undef NONE
+#elif defined( NONE )
 #  pragma warn A sloppy coder has defined NONE as a macro!!!
 #  undef NONE
 #endif

src/Main/main.cxx

@@ -1515,10 +1515,6 @@ int mainLoop( int argc, char **argv ) {
     argc = ccommand( &argv );
 #endif
 
-#ifdef HAVE_BC5PLUS
-    _control87(MCW_EM, MCW_EM);  /* defined in float.h */
-#endif
-
     // set default log levels
     sglog().setLogLevels( SG_ALL, SG_INFO );
 
@@ -1859,11 +1855,15 @@ int mainLoop( int argc, char **argv ) {
 // Main entry point; catch any exceptions that have made it this far.
 int main ( int argc, char **argv ) {
 
-#ifdef _MSC_VER
+#if defined( _MSC_VER ) && defined( DEBUG )
     // Christian, we should document what this does
     _control87( _EM_INEXACT, _MCW_EM );
 #endif
 
+#if defined( HAVE_BC5PLUS )
+    _control87(MCW_EM, MCW_EM);  /* defined in float.h */
+#endif
+
     // FIXME: add other, more specific
     // exceptions.
     try {

src/Scenery/tileentry.cxx

@@ -342,6 +342,8 @@ void *fgBillboard( ssgBranch *lightmaps, ssgVertexArray *light_maps, ssgSimpleSt
         leaf->setState( lightmap_state );
         lightmaps->addKid( leaf );
     }
+
+    return NULL;
 }
 
 ssgBranch* FGTileEntry::gen_runway_lights( ssgVertexArray *points,ssgVertexArray *normal,