Poll.select() not portable to OS X

[Craig Treleaven <ctreleaven@…>]

select.poll()--used in utility.py--is not supported on the OS X, see following. <​http://bugs.python.org/issue5154> One reference I found suggests to use select.kevent() instead. <​https://github.com/mxcl/homebrew/issues/9531>

$ python
Python 2.6.8 (unknown, Apr 14 2012, 04:15:37)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from MythTV import *
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/lib/python2.6/site-packages/MythTV/__init__.py", line 36, in <module>
    from utility import *
  File "/opt/local/lib/python2.6/site-packages/MythTV/utility.py", line 8, in <module>
    from select import select, poll, POLLHUP, POLLIN, POLLOUT
ImportError: cannot import name poll

[Raymond Wagner]

fff02e698418de20a918480694ac74661ce666db

Add data poller loop for kqueue. This adds an alternate poller loop for systems that use kqueue rather than poll. Limited testing seems to work fine on FreeBSD, so it should work similarly on OSX.

[Raymond Wagner]

I'm marking this one fixed, unless someone with an OSX machine tests it and finds it not working.