- get "osc build --prefer-pkgs ..." working with Arch
Merge branch 'master' of https://github.com/ikeydoherty/osc
support maintenance release request with acceptinfo data (OBS 2.6)
- fixed testsuite (and indention)

Broken by commit 0e3641610eb25e72a7ecf8abeaa82398dc3c88e2
- do_submitrequest: use continue to start next loop iteration (instead of "next"...)
support installonly/noinstall tags for mock buildengine
- handle ImportError of a plugin more gracefully

See bnc#876538 for the details.
- do_maintainer: fixed typo (that cause a TypeError)
- do_maintainer: do not set bugowner/create bugowner request action twice
- do_maintainer: introduced setBugownerHelper method

Do not swallow urllib2.HTTPError exceptions with code != 403
- fix another place of group handling for set_bugowner
take epoch into account when calculating the filename

ArchLinux has the epoch in the canonname, Debian discusses doing
this as well.