Improve tagging of results with __recompute_tag
Improve tagging of results with __recompute_tag

Mark results as needing recompute if the chunk changed and needs_compile
or needs_execute.  Also remove recompute mark if the status changed and
it doesn't have needs_execute, needs_compile, or executing.

https://bugzilla.gnome.org/show_bug.cgi?id=648066

alexey4petrov/reinteract,alexey4petrov/reinteract,alexey4petrov/reinteract