message: Updated addresses to be valid qtum addresses
diff: from test_framework.test_framework import BitcoinTestFramework
  from test_framework.util import *
  +from test_framework.address import convert_btc_address_to_qtum
  class DisableWalletTest (BitcoinTestFramework):
  @@ -27,12 +28,12 @@ class DisableWalletTest (BitcoinTestFramework):
  # Check regression: https://github.com/bitcoin/bitcoin/issues/6963#issuecomment-154548880
  x = self.nodes[0].validateaddress('3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy')
  assert(x['isvalid'] == False)
  - x = self.nodes[0].validateaddress('mneYUmWYsuk7kySiURxCi3AGxrAqZxLgPZ')
  + x = self.nodes[0].validateaddress(convert_btc_address_to_qtum('mneYUmWYsuk7kySiURxCi3AGxrAqZxLgPZ'))
  assert(x['isvalid'] == True)
  # Checking mining to an address without a wallet
  try:
  - self.nodes[0].generatetoaddress(1, 'mneYUmWYsuk7kySiURxCi3AGxrAqZxLgPZ')
  + self.nodes[0].generatetoaddress(1, convert_btc_address_to_qtum('mneYUmWYsuk7kySiURxCi3AGxrAqZxLgPZ'))
  except JSONRPCException as e:
  assert("Invalid address" not in e.error['message'])
  assert("ProcessNewBlock, block not accepted" not in e.error['message'])
  