#23114 fixed a bug which was causing crashes on nuke 7 / Linux.
Minor: better alphabetic sorting of menu items
Ticket #21379 - Parenting in Nuke 7 causes nuke to crash on exit because objects
are left hanging and Shiboken's clean up tries to access them after Python is
de-initialized.
Ticket #21379 - Nuke crash fix passed QA.  Update supported Nuke version to 7.