added a few #ifdefs needed to build a smaller library (patch 751523)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21147 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/timercmn.cpp

@@ -163,7 +163,7 @@ bool wxTimerBase::Start(int milliseconds, bool oneShot)
 // wxStopWatch
 // ----------------------------------------------------------------------------
 
-#if wxUSE_LONGLONG
+#if wxUSE_STOPWATCH && wxUSE_LONGLONG
 
 void wxStopWatch::Start(long t)
 {
@@ -404,5 +404,5 @@ wxLongLong wxGetLocalTimeMillis()
 #endif // time functions
 }
 
-#endif // wxUSE_LONGLONG
+#endif // #if wxUSE_STOPWATCH && wxUSE_LONGLONG