[InterNetNews/inn] 337c2b: Document build dependencies in configure output

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 337c2bef59bde5dc8d7fc1dfdb50691e55492871
      https://github.com/InterNetNews/inn/commit/337c2bef59bde5dc8d7fc1dfdb50691e55492871
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2022-02-09 (Wed, 09 Feb 2022)

  Changed paths:
    M configure.ac

  Log Message:
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  Document build dependencies in configure output