[MERGE][0.14] Skip tests when 'tools' is not available

[John Arbash Meinel]

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We do not install the 'tools' package that exists in the source
distribution. Recently Alexander added a couple of tests for it (which
is good), but they fail in an installed copy because the package is not
available (bad thing).

This patch just skips them if it cannot find the 'tools' packages.

Arguably, it should know more about whether it is in source or not,
(potentially these tests could start skipping and we wouldn't realize
they weren't running).

I'm still happy enough with it to ask for it to be merged.

John
=:->
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