Merge pull request #66 from thomas-mangin/master

3.2.18 release changes
Add Gentoo to list of packagers
Merge pull request #67 from ljakab/master

Add Gentoo to list of packagers
Merge pull request #68 from thomas-mangin/master

bug fixes
use positional argument specifiers for python 2.6 compatibility
Merge branch 'python26-compatibility' of https://github.com/crazed/exabgp into crazed-python26-compatibility