Python-bugzilla

- bin/bugzilla: Add --ensure-logged-in option
- Fix get_products with bugzilla.redhat.com
- A few other minor improvements

- Add bugzilla new/query/modify --field flag (Arun Babu Neelicattu)
- API support for ExternalBugs (Arun Babu Neelicattu, Brian Bouterse)
- Add new/modify --alias support (Adam Williamson)
- Bugzilla.logged_in now returns live state (Arun Babu Neelicattu)
- Fix getbugs API with latest Bugzilla releases

- Support for bugzilla tokens (Arun Babu Nelicattu)
- bugzilla: Add query/modify --tags
- bugzilla --login: Allow to login and run a command in one shot
- bugzilla --no-cache-credentials: Don't use or save cached credentials
when using the CLI
- Show bugzilla errors when login fails
- Don't pull down attachments in bug.refresh(), need to get
bug.attachments manually
- Add Bugzilla bug_autorefresh parameter.

- Python 3 support (Arun Babu Neelicattu)
- Port to python-requests (Arun Babu Neelicattu)
- bugzilla: new: Add --keywords, --assigned_to, --qa_contact (Lon Hohberger)
- bugzilla: query: Add --quicksearch, --savedsearch
- bugzilla: query: Support saved searches with --from-url
- bugzilla: --sub-component support for all relevant commands

- CVE-2013-2191: Switch to pycurl to get SSL host and cert validation
- bugzilla: modify: add --dependson (Don Zickus)
- bugzilla: new: add --groups option (Paul Frields)
- bugzilla: modify: Allow setting nearly every bug parameter
- NovellBugzilla implementation removed, can't get it to work

- Replace usage of non-upstream Red Hat bugzilla APIs with upstream replacements
- Test suite improvements, nearly complete code coverage
- Fix all open bug reports and RFEs