1. wxThread changes (detached/joinable) for MSW and docs updates

2. wxUSE_GUI=0 compilation for MSW (use vc6dll.t with tmake) and many small
   fixes related to this
3. an attempt to make wxLog more MT friendly
4. a small fix for wxRegConfig: it doesn't create empty unused keys any
   more (SetPath() would always create a key, now it's deleted if it was
   empty)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4712 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/threadpsx.cpp

@@ -685,7 +685,14 @@ wxThreadError wxThread::Resume()
 // exiting thread
 // -----------------------------------------------------------------------------
 
-wxThread::ExitCode wxThread::Delete()
+wxThread::ExitCode Wait()
+{
+    wxFAIL_MSG("TODO");
+
+    return 0;
+}
+
+wxThreadError wxThread::Delete(ExitCode *rc)
 {
     if (IsPaused())
       Resume();
@@ -745,7 +752,7 @@ wxThreadError wxThread::Kill()
     }
 }
 
-void wxThread::Exit(void *status)
+void wxThread::Exit(ExitCode status)
 {
     // first call user-level clean up code
     OnExit();