* acinclude.m4: Update references to final C++11 standard.
	* include/bits/shared_ptr.h: Likewise.
	* include/bits/shared_ptr_base.h: Likewise.
	* include/bits/unique_ptr.h: Likewise.
	* include/std/chrono: Likewise.
	* include/std/thread: Likewise.

From-SVN: r190271