Added wallet tools

Signed-off-by: David Perry <enmaku@gmail.com>

contrib/wallettools/walletchangepass.py

@@ -0,0 +1,5 @@
+from jsonrpc import ServiceProxy
+access = ServiceProxy("http://127.0.0.1:8332")
+pwd = raw_input("Enter old wallet passphrase: ")
+pwd2 = raw_input("Enter new wallet passphrase: ")
+access.walletpassphrasechange(pwd, pwd2)

contrib/wallettools/walletunlock.py

@@ -0,0 +1,4 @@
+from jsonrpc import ServiceProxy
+access = ServiceProxy("http://127.0.0.1:8332")
+pwd = raw_input("Enter wallet passphrase: ")
+access.walletpassphrase(pwd, 60)