Encoding errors with SessionStore and unicode (patch given)

[anonymous]

Thanks for the fixed of #2327 and It works now.

I found another similar bug in SessionStore with the unicode username. they can not login with unicode username.

Here is my patch:

change pwhash.py

def _encode(*args):
    return [a.encode('utf-8') for a in args]

=>

def _encode(*args):
    return [a for a in args]

and

def htdigest(user, realm, password):
    p = ':'.join([user, realm, password])
    return md5.new(p).hexdigest()

=>

def htdigest(user, realm, password):
    p = ':'.join([user, realm, password])
    return md5.new(p.encode('utf-8')).hexdigest()

It works for me, but please check if the changes are all right.

[Matt Good]

(In [5273]) fix SessionStore unicode errors due to double-escaping in htdigest hash method (fixes #4628)