Help needed with bug in quicker_sort

Hi everyone We are almost ready to release 0.10, but a serious blocker is that quicker_sort segfaults under OSX. If there is anyone here with the necessary know-how to track this down, please get in touch. I can provide you with shell access on an OSX machine if that would help. Please see https://github.com/scikit-image/scikit-image/issues/835 Thanks Stéfan