2009-05-06  Paolo Carlini  <paolo.carlini@oracle.com>

	Revert:
	2009-05-03  Paolo Carlini  <paolo.carlini@oracle.com>

	* acinclude.m4 ([GLIBCXX_ENABLE_ATOMIC_BUILTINS]): Do link tests when
	possible.
	* configure: Regenerate.

From-SVN: r147154