Simple script to update ccan/ dir.

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

We were always asking about the first child, which breaks when there's more
than one!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
peer_cache: rehash if peer offers different port.

Which it will, if it connects to us.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
netaddr: get socket address correctly.

Was fixed in 275146137968097b1adbb2f514462e33d064144e, then reverted
in 87e32c86f9a0d366d428aff15957949585a18d3f.  Oops.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Fix coredump when we're sent a block with an unknown prev.

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