Applied patch, added test; Fixes #5521

[SVN r74521]

include/boost/signals/connection.hpp

@@ -132,7 +132,7 @@ namespace boost {
 
       connection release();
 
-      inline void swap(scoped_connection&);
+      void swap(scoped_connection&);
 
       scoped_connection& operator=(const connection&);
       scoped_connection& operator=(const scoped_connection&);

test/Jamfile.v2

@@ -33,6 +33,8 @@ project
   [ run signal_test.cpp     ]
 
   [ run trackable_test.cpp  ]
+
+  [ run swap_test.cpp  ]
  ;
 }
       

test/swap_test.cpp

@@ -0,0 +1,23 @@
+//	https://svn.boost.org/trac/boost/ticket/5521 
+//		claims a linker error for this.
+
+#include <boost/signal.hpp>
+#include <boost/signals/connection.hpp>
+
+struct HelloWorld 
+{
+  void operator()() const 
+  { 
+    std::cout << "Hello, World!" << std::endl;
+  } 
+};
+
+
+int main ( int argc, char *argv [] ) {
+	boost::signal<void ()> sig;
+	boost::signals::scoped_connection c1, c2;
+	
+	c1 = sig.connect ( HelloWorld ());
+	std::swap ( c1, c2 );
+	return 0;
+	}