o Fix argument to the make_parser(), it's tupe of strings, not just a string.
o Fix argument to the make_parser(), it's tupe of strings, not just
a string.

o make validation optional, the expat which is the default parser
in python does not support it.

o convert all socket and network addresses from unicode into regular
strings, particularly pypy fails when unicode instance is used in the
os module functions.

o make parser properly working with expat module.

sippy/rtp_cluster,sippy/rtp_cluster