Added encryptwallet call to bitrpc.py
Added encryptwallet call to bitrpc.py

This was the only call requiring password input which was still missing. Much useful to avoid leaving a plain text passphrase in the shell log.

(cherry picked from commit 7ad720d89020837ba1831055d8ee4eb955075f89)

reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin