Allow using socket from both wxBase and wxCore (adopting to changes from r50831)

Use Unix' gsocketiohandler files for wxBase.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51055 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/os2/apptbase.h

@@ -27,6 +27,12 @@ public:
 
     // Clean up message queue.
     virtual void TerminateGui(unsigned long ulHab);
+#if wxUSE_SOCKETS
+    // returns the select()-based socket manager for console applications which
+    // is also used by some ports (wxX11, wxDFB) in the GUI build (hence it is
+    // here and not in wxConsoleAppTraits)
+    virtual GSocketManager *GetSocketManager();
+#endif
 };
 
 #endif // _WX_OS2_APPTBASE_H_