by xjm: Make expected format for grant record arrays less annoying.
still more stuff
by xjm: Key global defaults by rid.
more stuff in update hook.
Issue #1358106 by Schnitzel, tim.plunkett: Fixed Clean up options list callback on module disable.
by xjm: Update CHANGELOG and API documentation for recent changes.
Issue #1383970 by xjm: Make taxonomy_access_global_defaults() return a more useful result format.