[libsigc++2] typed_slot_rep: =delete unimplemented copy and move operations.

[Murray Cumming <murrayc src gnome org>]

commit 043cfa5ca2cac2bc45facd0cea0a4c500a47e498
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Nov 6 09:29:35 2015 +0100

    typed_slot_rep: =delete unimplemented copy and move operations.
    
    Prevent, copy assignment operator, move constructor and move
    assignment operators from being generated automatically.
    These are never used, but this will make sure of that.
    See https://bugzilla.gnome.org/show_bug.cgi?id=756484#c5

 sigc++/functors/macros/slot.h.m4 |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/sigc++/functors/macros/slot.h.m4 b/sigc++/functors/macros/slot.h.m4
index ff199d5..a6c7288 100644
--- a/sigc++/functors/macros/slot.h.m4
+++ b/sigc++/functors/macros/slot.h.m4
@@ -276,6 +276,11 @@ struct typed_slot_rep : public slot_rep
     : slot_rep(cl.call_, &destroy, &dup), functor_(cl.functor_)
     { sigc::visit_each_type<trackable*>(slot_do_bind(this), functor_); }
 
+  typed_slot_rep& operator=(const typed_slot_rep& src) = delete;
+
+  typed_slot_rep(typed_slot_rep&& src) = delete;
+  typed_slot_rep& operator=(typed_slot_rep&& src) = delete;
+
   inline ~typed_slot_rep()
     {
       call_ = nullptr;