* gcc.dg/cpp/19960224-2.c, 20000625-2.c, cxxcom2.c, directiv.c,
	endif.c, if-4.c, if-5.c, if-mop.c, macsyntx.c, paste2.c, paste6.c,
	paste8.c, redef2.c, strify2.c, strp1.c, tr-warn1.c, tr-warn3.c,
	tr-warn6.c, undef1.c, undef2.c, widestr1.c: Update tests for
	new diagnostic messages.

	* gcc.dg/cpp/macro3.c: New tests.

From-SVN: r37099