Changelog:
=========
* #3594: Added "htmlcov" to FlatLayoutModuleFinder.DEFAULT_EXCLUDE -- by :user:'demianbrecht'
* #3667: Added a human-readable error description when ".egg-info" directory is not writeable -- by :user:'droodev'
* #3713: Fixed incomplete "getattr" statement that caused problems when accessing
undefined attribute.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>