[docs] [issue14394] Add speed improvement note to the decimal docs.

[Stefan Krah]

Stefan Krah added the comment:

Closing as out-of-date.

----------
resolution:  -> out of date
stage:  -> committed/rejected
status: open -> closed

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14394>
_______________________________________