Made VC++ makefiles and project files a bit more consistent

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6520 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/timercmn.cpp

@@ -295,7 +295,9 @@ wxLongLong wxGetLocalTimeMillis()
     ::GetLocalTime(&st);
     val += st.wMilliseconds;
 #else
+#ifndef __VISUALC__
 #warning "wxStopWatch will be up to second resolution!"
+#endif
 #endif
 
     return val;