message: change blacklist to blocklist
  Let's use a more appropriate and clear word and discard the usage of the blacklist. Blocklist is clear. Happy for everyone.
diff: @@ -19,7 +19,7 @@ from test_framework.util import (
  # Windows disallow control characters (0-31) and /\?%:|"<>
  FILE_CHAR_START = 32 if os.name == 'nt' else 1
  FILE_CHAR_END = 128
  -FILE_CHAR_BLACKLIST = '/\\?%*:|"<>' if os.name == 'nt' else '/'
  +FILE_CHAR_BLOCKLIST = '/\\?%*:|"<>' if os.name == 'nt' else '/'
  def notify_outputname(walletname, txid):
  @@ -32,7 +32,7 @@ class NotificationsTest(BitcoinTestFramework):
  self.setup_clean_chain = True
  def setup_network(self):
  - self.wallet = ''.join(chr(i) for i in range(FILE_CHAR_START, FILE_CHAR_END) if chr(i) not in FILE_CHAR_BLACKLIST)
  + self.wallet = ''.join(chr(i) for i in range(FILE_CHAR_START, FILE_CHAR_END) if chr(i) not in FILE_CHAR_BLOCKLIST)
  self.alertnotify_dir = os.path.join(self.options.tmpdir, "alertnotify")
  self.blocknotify_dir = os.path.join(self.options.tmpdir, "blocknotify")
  self.walletnotify_dir = os.path.join(self.options.tmpdir, "walletnotify")
  