[Bazaar] Add Bazaar support
[Bazaar] Add Bazaar support
Move python path setting to line with other environmental variables
Move python path to before install
add python path to both environments
remove dependency on tcl for building older ruby
move cacert install to before install from env
update changelog to reflect bzr support, fix url for pull 1562
Merge pull request #1632 from fmccann/bzr

[Bazaar] Add Bazaar support