Rework to use more-modern build style.
Many files are renamed; all uses of their names were changed.
- * .x-sc_trailing_blank: Renamed from .x-sc_trailing_blank.
+ * .x-sc_trailing_blank: Renamed from .x-sc_trailing_space.
* .x-sc_useless_cpp_parens: New file.
* build-aux/config.guess: Renamed from config/config.guess. Update.
* build-aux/config.sub: Renamed from config/config.sub. Update.
(sc_system_h_headers): Remove the need for .re-list.
(sc_the_the): New rule.
(sc_tight_scope): Simplify.
- (sc_trailing_space): Renamed from sc_trailing_blank.
+ (sc_trailing_blank): Renamed from sc_trailing_space.
(longopt_re): New macro.
(sc_two_space_separator_in_usage): New rule.
(sc_unmarked_diagnostics): Look at all files under CVS.