cpphash.h (struct cpp_reader): New members line, pseudo_newlines.
* cpphash.h (struct cpp_reader): New members line, pseudo_newlines.
* cpplex.c (handle_newline): Update prototype. Maintain logical
line number.
(skip_escaped_newlines, skip_block_comment, parse_string):
Update accordingly.
(_cpp_lex_token): Update, and store token position within the token.
* cpplib.h (struct cpp_token): Add line and column entries.
* cppmacro.c (replace_args): Position stringified tokens correctly.