* cppalloc.c (xstrdup): Use memcpy.
* cpperror.c (cpp_print_containing_files): Don't use
cpp_notice.
* cpplib.c (conditional_skip): Set temp->lineno.
(do_endif): Make error message less obscure.
(if_directive_name): New function.
(cpp_get_token [case EOF]): Unwind the if stack and generate
error messages for each unterminated conditional in this file.
(parse_string): Do not behave differently if -traditional.