[MERGE] More debugging for deprecated functions

[John Arbash Meinel]

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This was helpful when trying to figure out why I was getting some
deprecation warnings (specifically bzr-loom uses the deprecated get/put
functions.)

I can't import trace at the top of the module, because there seems to be
an import cycle if I do. If it really matters, I suppose I could use a
lazy import.

Anyway, just a quick patch I found useful. We *could* print these to the
screen, but I think that would give a *lot* more clutter for minimal
gain. Unless we wanted to only do that with -Derror or something.

John
=:->
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