Red Bear OS relibc baseline

From release 0.1.0 pre-patched archive.
This includes all Red Bear modifications previously maintained
as patches in local/patches/relibc/.

tests/string/strncmp.c

@@ -0,0 +1,13 @@
+#include <string.h>
+#include <stdio.h>
+
+#include "test_helpers.h"
+
+int main(void) {
+    printf("%d\n", strncmp("a", "aa", 2));
+    printf("%d\n", strncmp("a", "aä", 2));
+    printf("%d\n", strncmp("\xFF", "\xFE", 2));
+    printf("%d\n", strncmp("", "\xFF", 1));
+    printf("%d\n", strncmp("a", "c", 1));
+    printf("%d\n", strncmp("a", "a", 2));
+}