  Copyright 2009 Free Software Foundation, Inc.

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

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These are mostly bits of code that seemed easiest to
#include in various programs rather than having a full-blown
library routine to do it.

In many cases there is conditionally compiled code that
depends on what it's included in.

John Collins
