databases/py-riak: Update to 2.1.0rc1

- Update to 2.1.0rc1
- Add py-openssl to RUN_DEPENDS
- Add LICENSE_FILE
- Update COMMENT (from setup.py)
- Modernise Python framework entries
- Limit Python version to -2.7 (As recommended upstream)

Announcement:

  http://lists.basho.com/pipermail/riak-users_lists.basho.com/2014-July/015631.html

PR:		189917


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@366586 35697150-7ecd-e111-bb59-0022644237b5
- Add missing OPTIONS_DEFINE
- Convert PYDISTUTILS_AUTOPLIST and USE_PYDISTUTILS to USE_PYTHON
- Remove python from SHEBANG_LANG
- Add REINPLACE_ARGS
- Move .bak/.orig removal from pre-install: to post-patch:
- Use @sample
- Bump PORTREVISION for package change
- Take maintainership


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@366587 35697150-7ecd-e111-bb59-0022644237b5