multi: update btcsuite API's to latest upstream changes

This commit makes a large number of minor changes concerning API usage
within the deamon to match the latest version on the upstream btcsuite
libraries.

The major changes are the switch from wire.ShaHash to chainhash.Hash,
and that wire.NewMsgTx() now takes a paramter indicating the version of
the transaction to be created.

shachain/shachain.go

@@ -8,7 +8,7 @@ import (
 	"io"
 	"sync"
 
-	"github.com/roasbeef/btcd/wire"
+	"github.com/roasbeef/btcd/chaincfg/chainhash"
 	"github.com/roasbeef/btcutil"
 )
 
@@ -32,7 +32,7 @@ type HyperShaChain struct {
 
 	chainBranches [64]chainBranch
 
-	lastHash wire.ShaHash
+	lastHash chainhash.Hash
 }
 
 // NewHyperShaChain
@@ -145,14 +145,14 @@ func (h *HyperShaChain) AddNextHash(hash [32]byte) error {
 }
 
 // CurrentPreImage...
-func (h *HyperShaChain) CurrentPreImage() *wire.ShaHash {
+func (h *HyperShaChain) CurrentPreImage() *chainhash.Hash {
 	h.RLock()
 	defer h.RUnlock()
 	return &h.lastHash
 }
 
 // CurrentRevocationHash...
-// TODO(roasbeef): *wire.ShaHash vs [wire.HashSize]byte ?
+// TODO(roasbeef): *chainhash.Hash vs [wire.HashSize]byte ?
 func (h *HyperShaChain) CurrentRevocationHash() []byte {
 	h.RLock()
 	defer h.RUnlock()