* cpptrad.c (struct fun_macro): Add line number.
	(scan_out_logical_line): Set it, and use it to report unterminated
	macro invocations.
testsuite:
	* gcc.dg/cpp/trad/comment-2.c. gcc.dg/cpp/trad/funlike-2.c,
	gcc.dg/cpp/trad/funlike.c, gcc.dg/cpp/trad/funlike-3.c,
	gcc.dg/cpp/trad/literals-1.c, gcc.dg/cpp/trad/literals-2.c,
	gcc.dg/cpp/trad/macroargs.c, gcc.dg/cpp/trad/quote.c: New tests.

From-SVN: r54907