* cpphash.c (trad_stringify, add_pat): New functions.
(collect_expansion): Restore support for -traditional syntax.
Use trad_stringify and add_pat.
(_cpp_macroexpand): Restore support for -traditional semantics.
* cpplex.c (_cpp_scan_line): Don't change space_before if we
get a COMMENT token.
(_cpp_lex_token): Provide COMMENT tokens to caller if
traditional and parsing_define_directive.
(skip_comment): Warn about // comments if -Wtraditional.
* cpplib.c (do_define): Fix typo. Create EMPTY nodes with
proper node type.
(do_undef): Don't warn about undefining EMPTY nodes.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33350
138bc75d-0d04-0410-961f-
82ee72b054a4