Global stability of the equilibrium for scalar delay differential equations

This version has a lot of inserted Comments to indicate what must be done and what will be in here when this is completed. [These Comments also note open questions, where possible, so for suggested results not noted as open one may assume the proofs are known, even if not yet included.] This was originally intended as a revised version of what became [5] before publication, then became comments (initially addressed to Giang and Lenbury) toward the possibility of a successor to that paper since the earlier version of it had actually been submitted (and then accepted).