Merge changes from 0.12.x, change version to 0.13.0-dev.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1460089 13f79535-47bb-0310-9956-ffa450edef68
Fix a regression in Softlayer driver caused by the xmlrpclib changes. Also
remove extra trailing slash in the URL path.

Contributed by Jason Johnson, part of LIBCLOUD-310.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1460093 13f79535-47bb-0310-9956-ffa450edef68
Fix broken _wait_until_running method which is deprecated in favor or
'public' wait_until_running.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1460102 13f79535-47bb-0310-9956-ffa450edef68
pep8.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1460103 13f79535-47bb-0310-9956-ffa450edef68
Allow user to specify alternative ssh usernames (ssh_alternate_usernames kwarg)
which are used with deploy_node if the default one doesn't work.

Contributed by Chris Psaltis, part of LIBCLOUD-309.


git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1460106 13f79535-47bb-0310-9956-ffa450edef68