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/strspn.c

@@ -0,0 +1,13 @@
+#include <string.h>
+#include <stdio.h>
+
+#include "test_helpers.h"
+
+int main(void) {
+	char *hello = "hello";
+	char *world = "world";
+	char *banana = "banana";
+	printf("%lu\n", strspn(hello, "hello")); // should be 5
+	printf("%lu\n", strspn(world, "wendy")); // should be 1
+	printf("%lu\n", strspn(banana, "apple")); // should be 0
+}