* etags.c (just_read_file): Reset lineno and charno on entry.

* etags.c (just_read_file): Reset lineno and charno on entry.
	* etags.c: Prolog language totaly rewritten.
        (Prolog_functions): Rewritten from scratch.
	(skip_comment, prolog_getit): Removed.
        (prolog_skip_comment): New function, like old skip_comment.
        (prolog_pred, prolog_atom, prolog_white): New functions.
        (erlang_func, erlang_attributes): Forward declarations added.
        (erlang_atom): Check if backslash ends line inside quoted atom.
	* etags.c (absolutefn): DOS_NT version corrected.
	(main): Append "/" to the dir name only if not already there.
	(print_help): Explain the absolute/relative file name issue.
	* etags.c: New Languange Erlang added.
	(Erlang_functions, erlang_func, erlang_attribute, erlang_atom,
	erlang_white): New functions.
	(Erlang_suffixes): New suffix list.
	(lang_names): Erlang entry added.
	(prolog_getit): Accepts headers spanning several lines.
	Always name tags.
	(Prolog_functions): Removed incorrect compensation for
	newline characters.
	(readline_internal): Zero-terminate last line.