re PR testsuite/20772 (x86 tests should run on both i?86 and x86_64)

	PR testsuite/20772
	* g++.dg/abi/mangle24.C, g++.dg/abi/mangle25.C,
	g++.dg/ext/vector2.C, g++.dg/opt/longbranch2.C, g++.dg/opt/mmx1.C,
	g++.dg/opt/reg-stack4.C, gcc.dg/20020108-1.c, gcc.dg/20020122-2.c,
	gcc.dg/20020122-3.c, gcc.dg/20020206-1.c, gcc.dg/20020310-1.c,
	gcc.dg/20020411-1.c, gcc.dg/20020418-2.c, gcc.dg/20020426-2.c,
	gcc.dg/20020517-1.c, gcc.dg/20030204-1.c, gcc.dg/20030826-2.c,
	gcc.dg/20031202-1.c, gcc.dg/format/unnamed-1.c, gcc.dg/setjmp-2.c,
	gcc.dg/short-compare-1.c, gcc.dg/short-compare-2.c,
	gcc.dg/tls/opt-1.c, gcc.dg/tls/opt-2.c,
	gcc.dg/torture/fp-int-convert-float128-timode.c,
	gcc.dg/torture/fp-int-convert-float128.c,
	gcc.dg/torture/fp-int-convert-float80-timode.c,
	gcc.dg/torture/fp-int-convert-float80.c, gcc.dg/unroll-1.c,
	gcc.target/i386/20030926-1.c: Merge i?86 and x86_64 cases.

	* gcc.dg/tls/opt-1.c: Require effective target fpic.

From-SVN: r108348