unicode build: "comparison is always true" warnings

[Mark A. Hershberger]

I'm working on providing snapshots of the unicode branch and have been
getting a ton of these messages:

    warning: comparison is always true due to limited range of data type

Most are in syntax.c, but one shows up in search.c.

There is also a warning from movemail.c:

    warning: the use of `mktemp' is dangerous, better use `mkstemp' or
    `mkdtemp'

Are these significant?  Should I be worried?

Shortened link to launchpad.net build log: http://xrl.us/bbntv

Mark.

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