Merge #12953: Deprecate accounts

cead28b [docs] Add release notes for deprecated 'account' API (John Newbery)
72c9575 [wallet] [tests] Add tests for accounts/labels APIs (John Newbery)
109e05d [wallet] [rpc] Deprecate wallet 'account' API (John Newbery)
3576ab1 [wallet] [rpc] Deprecate account RPC methods (John Newbery)
3db1ba0 [tests] Set -deprecatedrpc=accounts in tests (John Newbery)
4e671f0 [tests] Rename rpc_listtransactions.py to wallet_listtransactions.py (John Newbery)
a28b907 [wallet] [rpc] Remove duplicate entries in rpcwallet.cpp's CRPCCommand table (John Newbery)

Pull request description:

  Deprecate all accounts functionality and make it only accessible by using `-deprecatedrpc=accounts`.

  Accounts specific RPCs, account arguments, and account related results all require the `-deprecatedrpc=accunts` startup option now in order to see account things.

  Several wallet functional tests use the accounts system. Those tests are unchanged, except to start the nodes with `-deprecatedrpc=accounts`. We can slowly migrate those tests to use the 'label' API instead of the 'account' API before accounts are fully removed.

Tree-SHA512: 89f4ae2fe6de4a1422f1817b0997ae22d63ab5a1a558362ce923a3871f3e42963405d6573c69c27f1764679cdee5b51bf52202cc407f1361bfd8066d652f3f37

test/functional/wallet_txn_clone.py

@@ -10,6 +10,7 @@ from test_framework.util import *
 class TxnMallTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 4
+        self.extra_args = [['-deprecatedrpc=accounts']] * 4
 
     def add_options(self, parser):
         parser.add_option("--mineblock", dest="mine_block", default=False, action="store_true",