test failures due to quote marks

[Nathan Sidwell]

Today I had a load of test failures, which AFAICT stem from the
diagnostics being emitted with 0x321 & 0x322 quote marks rather than
regular ` and ' marks.  I don't think I've changed anything in my
environment -- it's building  a pristine tree in the same shell that worked
yesterday.

What's up?

nathan
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