daemon: open-code handling of on-chain states.

Once we see an on-chain tx, we ignore the state machine and handle it
as per the onchain.md draft.  This specifies a *resolution* for each
output, and we're done when they're irrevocable.

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

Makefile

@@ -62,6 +62,7 @@ CCAN_OBJS :=					\
 	ccan-isaac.o				\
 	ccan-isaac64.o				\
 	ccan-list.o				\
+	ccan-mem.o				\
 	ccan-noerr.o				\
 	ccan-opt-helpers.o			\
 	ccan-opt-parse.o			\
@@ -378,3 +379,5 @@ ccan-io-poll.o: $(CCANDIR)/ccan/io/poll.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 ccan-pipecmd.o: $(CCANDIR)/ccan/pipecmd/pipecmd.c
 	$(CC) $(CFLAGS) -c -o $@ $<
+ccan-mem.o: $(CCANDIR)/ccan/mem/mem.c
+	$(CC) $(CFLAGS) -c -o $@ $<