global: remove unnecessary includes from headers.

Each header should only include the other headers it needs to compile;
`devtools/reduce-includes.sh */*.h` does this.  The C files then need
additional includes if they don't compile.

And remove the entirely useless wire/onion_wire.h, which only serves to include wire/onion_wiregen.h.

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

wire/Makefile

@@ -74,6 +74,8 @@ wire/peer_wiregen.h_args := --include='common/channel_id.h' --include='bitcoin/t
 
 wire/peer_wiregen.c_args := -s --expose-tlv-type=tlv_n1 --expose-tlv-type=tlv_n2
 
+wire/peer_printgen.c_args := --include='wire/peer_wiregen.h'
+
 # The payload isn't parsed in a fromwire, so we need to expose it.
 wire/onion_wiregen.h_args := --include='bitcoin/short_channel_id.h' --include='bitcoin/privkey.h' --include='common/bigsize.h' --include='common/amount.h' --include='common/node_id.h' --include='bitcoin/block.h' --include='common/sciddir_or_pubkey.h' -s --expose-tlv-type=tlv_payload
 
@@ -86,8 +88,8 @@ wire/peer_exp_printgen.h_args := --include='wire/channel_type_printgen.h'
 wire/onion_exp_wiregen.h_args := $(wire/onion_wiregen.h_args)
 wire/onion_exp_wiregen.c_args := $(wire/onion_wiregen.c_args)
 
-wire/bolt12_wiregen.c_args := -s --expose-tlv-type=tlv_blinded_path --expose-tlv-type=tlv_invoice_request --expose-tlv-type=tlv_invoice
-wire/bolt12_wiregen.h_args := --include='bitcoin/short_channel_id.h' --include='bitcoin/signature.h' --include='bitcoin/privkey.h' --include='common/bigsize.h' --include='common/amount.h' --include='common/node_id.h' --include='bitcoin/block.h'  --include='wire/onion_wire.h' $(wire/bolt12_wiregen.c_args)
+wire/bolt12_wiregen.c_args := -s --expose-tlv-type=tlv_blinded_path --expose-tlv-type=tlv_invoice_request --expose-tlv-type=tlv_invoice --include='wire/onion_wiregen.h' 
+wire/bolt12_wiregen.h_args := --include='bitcoin/short_channel_id.h' --include='bitcoin/signature.h' --include='bitcoin/privkey.h' --include='common/bigsize.h' --include='common/amount.h' --include='common/node_id.h' --include='bitcoin/block.h' $(wire/bolt12_wiregen.c_args)
 
 wire/bolt12_printgen.c_args := --expose-tlv-type=tlv_blinded_path --expose-tlv-type=tlv_invoice_request --include='wire/onion_wiregen.h'  --include='wire/onion_printgen.h'
 wire/bolt12_printgen.h_args := --include='wire/bolt12_wiregen.h' --expose-tlv-type=tlv_blinded_path --expose-tlv-type=tlv_invoice_request

wire/onion_defs.h

@@ -2,7 +2,6 @@
 #ifndef LIGHTNING_WIRE_ONION_DEFS_H
 #define LIGHTNING_WIRE_ONION_DEFS_H
 #include "config.h"
-#include <common/sciddir_or_pubkey.h>
 
 /* BOLT #4:
  *

wire/onion_wire.h

@@ -1,8 +0,0 @@
-#ifndef LIGHTNING_WIRE_ONION_WIRE_H
-#define LIGHTNING_WIRE_ONION_WIRE_H
-#include "config.h"
-#include <stdbool.h>
-
-#include <wire/onion_wiregen.h>
-
-#endif /* LIGHTNING_WIRE_ONION_WIRE_H */

wire/peer_wire.h

@@ -1,7 +1,6 @@
 #ifndef LIGHTNING_WIRE_PEER_WIRE_H
 #define LIGHTNING_WIRE_PEER_WIRE_H
 #include "config.h"
-#include <stdbool.h>
 
 #include <wire/peer_wiregen.h>
 

wire/tlvstream.c

@@ -1,6 +1,7 @@
 #include "config.h"
 #include <ccan/asort/asort.h>
 #include <common/bigsize.h>
+#include <common/utils.h>
 #include <wire/tlvstream.h>
 #include <wire/wire.h>
 

wire/tlvstream.h

@@ -2,8 +2,6 @@
 #define LIGHTNING_WIRE_TLVSTREAM_H
 #include "config.h"
 #include <bitcoin/short_channel_id.h>
-#include <ccan/short_types/short_types.h>
-#include <ccan/tal/tal.h>
 
 struct tlv_record_type {
 	u64 type;

wire/wire.h

@@ -1,12 +1,9 @@
 #ifndef LIGHTNING_WIRE_WIRE_H
 #define LIGHTNING_WIRE_WIRE_H
 #include "config.h"
-#include <ccan/short_types/short_types.h>
-#include <ccan/tal/tal.h>
 #include <common/jsonrpc_errors.h>
 #include <common/wireaddr.h>
 #include <secp256k1_recovery.h>
-#include <stdlib.h>
 
 struct ripemd160;
 struct sha256;