Streamline wxSocket code: wxSocketBase now uses wxSocketImpl (previously known

as GSocket) which is a base class with various wxSocketImplXXX implementations
provided by different wxSocketManagers.

Share more code between ports (still not finished).

Refactor some code inside wxSocketImpl itself to be less redundant and fixed a
couple of minor bugs in the process.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56994 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/unix/app.h

@@ -52,6 +52,4 @@ private:
     // the signal handlers
     WX_DECLARE_HASH_MAP(int, SignalHandler, wxIntegerHash, wxIntegerEqual, SignalHandlerHash);
     SignalHandlerHash m_signalHandlerHash;
-
-    friend class GSocketGUIFunctionsTableBase;
 };