Compile fix in dialup,

Removed GTK's native tab traversal and fixed some related probs,
  Fixed a crash in wxListCtrl,
  Added configure correction ofr HP-UX GNU shared linker.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4548 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/dialup.cpp

@@ -524,7 +524,7 @@ wxDialUpManagerImpl::CheckIfconfig(void)
                   || strstr(output,"sl") // slip
                   || strstr(output,"pl") // plip
 #else
-                  wxASSERT(0); // unreachable code
+                  FALSE
 #endif
                   )
                   rc = 1;