Move proof of readiness model property to analysis module.

This fixes all warnings about ambiguous module names and resolves #49.

It also highlights that we still need to cut down on superfluous
Require Import commands in recently ported files.

Pierre Roux authored 5 years ago and Björn Brandenburg committed 5 years ago

We no longer support Coq 8.8.

Rationale: reserve the behavior folder for trace-based semantics.

These lemmas really constitute an analysis of the basic consequences
arising from the chosen semantics and hence logically belong to the
"analysis" part of Prosa.

Add a [job_ready] parameter to the job model, akin to [pending], that
defines whether a job can be scheduled at a given time in a given schedule.

Then use this new general notion of readiness to define [backlogged].

A pending job may not be ready, whereas (under any reasonable
definition) a ready job ought to be pending, so this definition is
more precise and captures effects such as jitter and self-suspensions.