[issue18604] Consolidate gui available checks in test.support

[Zachary Ware]

Zachary Ware added the comment:

If there are no objections forthcoming, I'll try to get this applied to 3.4/3.5 later this week, then look into backporting to 2.7.

----------
assignee:  -> zach.ware
components: +Tests, Tkinter
versions: +Python 3.5
Added file: http://bugs.python.org/file35121/issue18604.v2.diff

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18604>
_______________________________________