Include <utility> for some versions of gcc's library.

Sometimes gcc's <cstddef> doesn't define the C++ macros, so check for it
and include <utility> in that case. Also remove a workaround from
container_fwd.hpp

Fixes #2924.

[SVN r52246]

libs/config

@@ -1 +1 @@
-Subproject commit 833e50fe8f4cdcffbcef3245303e5040dc9affbd
+Subproject commit 1271821c44bb8222fc7e327301dd2a20093c2456

libs/detail

@@ -1 +1 @@
-Subproject commit 3178938f98f5627fd800b392dc717ec596659847
+Subproject commit d425f1e5bfb63eb72ef3bd521ede3ae381b86abe