[libsigc++2] C++11: slot*: Add move operations.

[Murray Cumming <murrayc src gnome org>]

commit 5c152260602e118e75761d9f8510e2368d7b3112
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Sep 1 14:33:22 2015 +0200

    C++11: slot*: Add move operations.

 sigc++/functors/macros/slot.h.m4 |   18 ++++++++++++++++--
 1 files changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/sigc++/functors/macros/slot.h.m4 b/sigc++/functors/macros/slot.h.m4
index dac433c..27d19d2 100644
--- a/sigc++/functors/macros/slot.h.m4
+++ b/sigc++/functors/macros/slot.h.m4
@@ -86,14 +86,28 @@ FOR(1, $1,[
     }
 
   slot$1(const slot$1& src)
-    : slot_base(src) {}
+    : slot_base(src)
+    {}
+
+  slot$1(slot$1&& src) noexcept
+    : slot_base(std::move(src))
+    {}
 
   /** Overrides this slot making a copy from another slot.
    * @param src The slot from which to make a copy.
    * @return @p this.
    */
   slot$1& operator=(const slot$1& src)
-    { slot_base::operator=(src); return *this; }
+    {
+      slot_base::operator=(src);
+      return *this;
+    }
+
+  slot$1& operator=(slot$1&& src) noexcept
+    {
+      slot_base::operator=(std::move(src));
+      return *this;
+    }
 };
 
 ])