list: change license to BSD-MIT.

Approved by all contributors:
https://lists.ozlabs.org/pipermail/ccan/2012-September/000490.html
https://lists.ozlabs.org/pipermail/ccan/2012-September/000488.html
https://lists.ozlabs.org/pipermail/ccan/2012-September/000489.htmlSigned-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/list/LICENSE

-../../licenses/LGPL-2.1
\ No newline at end of file
+../../licenses/BSD-MIT
\ No newline at end of file

ccan/list/_info

@@ -53,7 +53,7 @@
  *		return 0;
  *	}
  *
- * License: LGPL (v2.1 or any later version)
+ * License: BSD-MIT
  * Author: Rusty Russell <rusty@rustcorp.com.au>
  */
 int main(int argc, char *argv[])

ccan/list/list.c

-/* Licensed under LGPLv2.1+ - see LICENSE file for details */
+/* Licensed under BSD-MIT - see LICENSE file for details */
 #include <stdio.h>
 #include <stdlib.h>
 #include "list.h"

ccan/list/list.h

-/* Licensed under LGPLv2.1+ - see LICENSE file for details */
+/* Licensed under BSD-MIT - see LICENSE file for details */
 #ifndef CCAN_LIST_H
 #define CCAN_LIST_H
 #include <stdbool.h>