Future of src/utils

We have src/utils for stuff supposedly that is used by the backend and
other binaries, and src/backend/port for stuff used only by the backend.

However, over time, this distinction has broken down and we have a
number of backend/port stuff used in other binaries. I propose moving
the src/utils remaining items into src/backend/port, and removing the
src/utils directory.

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Bruce Momjian | http://candle.pha.pa.us
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