tests: address syntax-check failures

* cfg.mk: Ignore failures in timevar (uses GCC style configuration,
not gnulib's).
* doc/local.mk: Space changes.
* lib/main.c, tests/calc.at: Remove useless HAVE_ tests.

lib/main.c

@@ -18,13 +18,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
-
-#if HAVE_LOCALE_H
-# include <locale.h>
-#endif
-#if ! HAVE_SETLOCALE
-# define setlocale(Category, Locale)
-#endif
+#include <locale.h>
 
 int yyparse (void);