Log message:
Update py-flask-mail to 0.9.1.

Version 0.9.1
-------------

Released September 28 2014

- Add an option for force ASCII file attachments
- Fix `force_text` function
- Fix some Python 3 support regarding email policy
- Added support ESMTP options
- Fixed various unicode issues related to message attachments,
  subjects, and email addresses

Log message:
Mark packages as not ready for python-3.x where applicable;
either because they themselves are not ready or because a
dependency isn't. This is annotated by
PYTHON_VERSIONS_INCOMPATIBLE=  33 # not yet ported as of x.y.z
or
PYTHON_VERSIONS_INCOMPATIBLE=  33 # py-foo, py-bar
respectively, please use the same style for other packages,
and check during updates.

Use versioned_dependencies.mk where applicable.
Use REPLACE_PYTHON instead of handcoded alternatives, where applicable.
Reorder Makefile sections into standard order, where applicable.

Remove PYTHON_VERSIONS_INCLUDE_3X lines since that will be default
with the next commit.

Whitespace cleanups and other nits corrected, where necessary.

Log message:
PYTHON_VERSIONS_INCOMPATIBLE cleanup.

Log message:
Import Flask-Mail-0.9.0 as www/py-flask-mail.

The Flask-Mail extension provides a simple interface to set up SMTP
with your Flask application and to send messages from your views
and scripts.