* cpphash.h (CPP_RESERVE, CPP_PUTS_Q, CPP_PUTS, CPP_PUTC_Q,
CPP_PUTC, DUMMY_TOKEN, NO_DUMMY_TOKEN): Delete.
* cpplex.c (_cpp_expand_token_space, _cpp_init_toklist,
_cpp_free_toklist): No need to worry about extra dummy token
at the start of token lists any more.
(trigraph_ok): Only warn outside comments.
(skip_block_comment): Set and clear lexing_comment.
(skip_line_comment): Take a cpp_reader not cpp_buffer.
Set and clear lexing_comment.
(parse_number): Handle leading '.' indicated by pfile->seen_dot.
(check_long_token): Delete.
(lex_percent, lex_dot): New subroutines of lex_token to
handle lexing of '.' and '%' without lookback.
(lex_token): Use lex_dot and lex_percent.
(lex_line): Don't check for LIST_OFFSET.
(_cpp_init_input_buffer): Update for new _cpp_init_toklist.
* cpplib.c (_cpp_parse_assertion): Similarly.
(cpp_push_buffer): Initialize extra_char.
* cpplib.h (LIST_OFFSET): Delete.
(struct cpp_buffer): New member extra_char.
(struct lexer_state): New members lexing_comment and seen_dot.
From-SVN: r36582
