Remove section about it from the functional programming FAQ.

from the doc. These two projects appear dead.

Streamline FAQ entry about the ternary operator, and suggest using io.StringIO for a mutable unicode container.

Still lacks docs for Windows (anyone?).

This fixes a regression compared to 2.x, where sys.modules.items()
returns a copy, as indicated by a comment in the source.  Diagnosis and
patch by Erik Tollerud.

It was already the case with Python 2.  However, the corresponding
sys module entries are now set to None (instead of an unusable file object).

Initial patch by Sjoerd de Vries.