likely: relicense to CC0.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/likely/LICENSE

@@ -1 +1 @@
-../../licenses/LGPL-2.1
+../../licenses/CC0

ccan/likely/_info

@@ -10,9 +10,9 @@
  * compiler and the reader.
  *
  * With CCAN_LIKELY_DEBUG defined, it provides statistics for each
- * likely()/unlikely() call.
+ * likely()/unlikely() call (but note that this requires LGPL dependencies).
  *
- * License: LGPL (v2.1 or any later version)
+ * License: CC0 (Public domain)
  * Author: Rusty Russell <rusty@rustcorp.com.au>
  *
  * Example:

ccan/likely/likely.c

@@ -1,4 +1,4 @@
-/* Licensed under LGPLv2.1+ - see LICENSE file for details */
+/* CC0 (Public domain) - see LICENSE file for details. */
 #ifdef CCAN_LIKELY_DEBUG
 #include <ccan/likely/likely.h>
 #include <ccan/hash/hash.h>

ccan/likely/likely.h

@@ -1,4 +1,4 @@
-/* Licensed under LGPLv2.1+ - see LICENSE file for details */
+/* CC0 (Public domain) - see LICENSE file for details */
 #ifndef CCAN_LIKELY_H
 #define CCAN_LIKELY_H
 #include "config.h"