develop/ktcc: Post-SVN tidy

- Move source code from `trunk` into program root directory.
- Update build files.

programs/develop/ktcc/libc.obj/include/stdarg.h

@@ -0,0 +1,16 @@
+#ifndef _STDARG_H_
+#define _STDARG_H_
+
+#include <stddef.h>
+
+typedef char* va_list;
+#define va_start(ap, last) ap = ((char*)&(last)) + ((sizeof(last) + 3) & ~3)
+#define va_arg(ap, type) (ap += (sizeof(type) + 3) & ~3, *(type*)(ap - ((sizeof(type) + 3) & ~3)))
+#define va_copy(dest, src) (dest) = (src)
+#define va_end(ap)
+
+/* fix a buggy dependency on GCC in libio.h */
+typedef va_list __gnuc_va_list;
+#define _VA_LIST_DEFINED
+
+#endif /* _STDARG_H */