rename P2PK to P2PKH to avoid confusion

gui/qt/main_window.py

@@ -52,7 +52,7 @@ from electrum.util import (block_explorer, block_explorer_info, format_time,
 from electrum import Transaction, mnemonic
 from electrum import util, bitcoin, commands, coinchooser
 from electrum import SimpleConfig, paymentrequest
-from electrum.wallet import Wallet, Multisig_Wallet, P2PK_Wallet
+from electrum.wallet import Wallet, Multisig_Wallet
 
 from amountedit import BTCAmountEdit, MyLineEdit, BTCkBEdit
 from network_dialog import NetworkDialog

lib/wallet.py

@@ -1378,7 +1378,7 @@ class Imported_Wallet(Abstract_Wallet):
         txin['signatures'] = [None]
 
 
-class P2PK_Wallet(Abstract_Wallet):
+class P2PKH_Wallet(Abstract_Wallet):
 
     def pubkeys_to_address(self, pubkey):
         return public_key_to_bc_address(pubkey.decode('hex'))
@@ -1540,7 +1540,7 @@ class Deterministic_Wallet(Abstract_Wallet):
 
 
 
-class Standard_Wallet(Deterministic_Wallet, P2PK_Wallet):
+class Standard_Wallet(Deterministic_Wallet, P2PKH_Wallet):
     wallet_type = 'standard'
 
     def __init__(self, storage):