added strftime %z check into configure.ac

moo/lib/main.c

@@ -660,10 +660,10 @@ if (mask & MOO_LOG_GC) return; /* don't show gc logs */
 	}
 #else
 	tmp = localtime_r (&now, &tm);
-	#if defined(__sun) && defined(__SVR4) /* TODO: better check on support of %z */
-	tslen = strftime (ts, sizeof(ts), "%Y-%m-%d %H:%M:%S %Z ", tmp); 
-	#else
+	#if defined(HAVE_STRFTIME_SMALL_Z)
 	tslen = strftime (ts, sizeof(ts), "%Y-%m-%d %H:%M:%S %z ", tmp);
+	#else
+	tslen = strftime (ts, sizeof(ts), "%Y-%m-%d %H:%M:%S %Z ", tmp); 
 	#endif
 	if (tslen == 0) 
 	{

moo/lib/moo-cfg.h.in

@@ -217,6 +217,9 @@
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
+/* strftime supports %z */
+#undef HAVE_STRFTIME_SMALL_Z
+
 /* Define to 1 if you have the <strings.h> header file. */
 #undef HAVE_STRINGS_H