Include missing <string.h> and <limits.h>

Fix warnings.

Update #2132.
Update #2133.

testsuite/program01/test_main.c

@@ -33,6 +33,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #include <syslog.h>
 #include <sys/socket.h>