Log Message:
Upgrade py-ipaddr to version 2.1.10. Major changes:

== 2.1.10 == (2012-01-20)

  * i84, fix iterhosts for /31's or /127's
  * private method arg cleanup.
  * i83, docstring issue.
  * i87, new ipv4/ipv6 parser. patch from pmarks
  * i90, fix copyright.
  * bytes fix. patch from pmarks.
            
== 2.1.9 == (2011-02-22)

  * fix warnings from python3.2
  * fix bug in _is_shorthand_ip resulting in bad teredo addresses.

== 2.1.8 == (2011-02-09)

  * Address and networks now again compare true, if the address matches.
  * ipaddr works again on Python 2.4 and 2.5.