Married HD wallets: Bloom filter adjustments
Alter KeyChainGroup.toString for married keychains

Displaying xpubs of following chains and P2SH addresses

Sample output:
```
Wallet containing 0 BTC (available: 0 BTC) in:
  0 pending transactions
  0 unspent transactions
  0 spent transactions
  0 dead transactions
Last seen best block: -1 (time unknown): null

Keys:
Seed as words: zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo when
Seed as hex:   ffffffffffffffffffffffffffffffffffffffffffffffff
Seed birthday: 1381276800  [Wed Oct 09 04:00:00 MSK 2013]
Key to watch:  xpub6876hv3rq62MpC2TcYWWNJfvU3EyK4W2GJv5LUZW47fX1fyxeRs7NDniymbWKJmkHx2vMpz7pQprCemktgGvEyMan8W1XYwSMR51QdSy5Mu

Following chain:  xpub67tVq9TLPPoaJZk4mvYbbHbkXTLSYLbQh5yWrM43TaCh7E8gjMCQpj9W3CQy2gsLnZWEWUuxM6eMtaZybMx3TpAT1Hwi2rXTks5VKoTTdWR

  addr:2MuiN73p6LsB8amTQiXCbqqYv4ssBjfUFev  hash160:1b12420a41525e708b80980790b8caabc6c636be  path:M/0'/0/0
  addr:2N4LTmAtGNE6hsmDhtoK3bwPk42GAAyPh8R  hash160:79a6f618fb1c2b99a7e414c8443a5bc5df3fa8db  path:M/0'/0/1
  ```
Wallet Tool: add new method to marry the wallets
Keeping issued P2SH scripts in sync with keys issued by underlying keychains.

It is then used for Wallet.isMine to work properly, for Bloom filter creation and in KeyChainGroup.toString