[windmill/windmill] d6ee01: Enable colorful traceback conditionally

[nor...@github.com]

Branch: refs/heads/master
Home: http://github.com/windmill/windmill

Commit: d6ee0124425ba270807ebd639e7b9088170ce3cb
http://github.com/windmill/windmill/commit/d6ee0124425ba270807ebd639e7b9088170ce3cb
Author: Julien Jehannet <julien....@gmail.com>
Date: 2010-10-12 (Tue, 12 Oct 2010)

Changed paths:
M windmill/dep/_functest/frame.py

Log Message:
-----------
Enable colorful traceback conditionally

Provide colorful traceback if stderr is a valid TTY which mimicks the
'--color' behaviour on Unix. Thus, the output will not be mangled by
ANSI characters when used in a chain of tools.