Fix string/bytes issues under python 3. 1) cgi/client.py: override cgi.FieldStorage's make_file so that file is always created in binary/byte mode. This means that json (and xml) are bytes not strings. 2) rest.py: try harder to find dicttoxml in roundup directory or on sys.path. This just worked under python 2 but python 3 only searches sys.path by default and does not search relative like python 2. 3) rest.py: replace headers.getheader call removed from python 3 with equivalent code. 4) rest.py: make value returned from dispatch into bytes not string. 5) test/caseinsensitivedict.py, test/test_CaseInsensitiveDict.py: get code from stackoverflow that implements a case insensitive key dict. So dict['foo'], dict['Foo'] are the same entry. Used for looking up headers in mocked http rewuset header array. 6) test/rest_common.py: rework tests for etags and rest to properly supply bytes to the called routines. Calls to s2b and b2s and use of BytesIO and overriding make_file in cgi.FieldStorage to try to make sure it works under python 3.

# copied from nosyreaction

from roundup import roundupdb

def newissuecopy(db, cl, nodeid, oldvalues):
    ''' Copy a message about new issues to a team address.
    '''
    # get relevant crypto settings
    encrypt = db.config.PGP_ENABLE and db.config.PGP_ENCRYPT

    # so use all the messages in the create
    change_note = cl.generateCreateNote(nodeid)

    # send a copy to the nosy list
    for msgid in cl.get(nodeid, 'messages'):
        try:
            # note: fourth arg must be a list
            cl.send_message(nodeid, msgid, change_note,
                            ['team@team.host'],
                            crypt=encrypt)
        except roundupdb.MessageSendError as message:
            raise roundupdb.DetectorError(message)

def init(db):
    db.issue.react('create', newissuecopy)

# vim: set filetype=python ts=4 sw=4 et si