PR testsuite/20772
	* g++.dg/opt/life1.C, g++.old-deja/g++.abi/aggregates.C,
	g++.old-deja/g++.abi/align.C, g++.old-deja/g++.abi/bitfields.C,
	g++.old-deja/g++.law/weak.C, g++.old-deja/g++.pt/asm2.C,
	gcc.dg/20000724-1.c, gcc.dg/pragma-align.c: Also test on
	x86_64-*-linux*.

From-SVN: r108322