allout-aberrant-container-p is a compiled Lisp function in `
True if topic, or next sibling with children, contains them discontinuously.
Discontinuous means an immediate offspring that is nested more
than one level deeper than the topic.
If topic has no offspring, then the next sibling with offspring will
determine whether or not this one is determined to be aberrant.
If true, then the allout-recent-* settings are calibrated on the
offspring that qualifies it as aberrant, ie with depth that
exceeds the topic by more than one.