develop/ktcc: Post-SVN tidy

- Move source code from `trunk` into program root directory.
- Update build files and include paths.
- Note: Line endings standardised from `CRLF` > `LF`, so best to view diffs with whitespace changes hidden.

programs/develop/ktcc/libc.obj/source/stdlib/rand.c

@@ -0,0 +1,15 @@
+#include <stdint.h>
+#include <stdlib.h>
+
+static uint64_t seed;
+
+void srand(unsigned s)
+{
+    seed = s - 1;
+}
+
+int rand(void)
+{
+    seed = 6364136223846793005ULL * seed + 1;
+    return seed >> 33;
+}