configure.ac: Add AC_CANONICAL_TARGET.

2007-06-18  Martin Michlmayr  <tbm@cyrius.com>
	    H.J. Lu  <hongjiu.lu@intel.com>

	* configure.ac: Add AC_CANONICAL_TARGET.
	* configure: Regenerated.

Co-Authored-By: H.J. Lu <hongjiu.lu@intel.com>

From-SVN: r125807