INSTALLATION_DIRS, as well as all occurrences of ${PREFIX}/man with
${PREFIX}/${PKGMANDIR}.
Fixes PR 35265, although I did not use the patch provided therein.
* Automatically issue the equivalent of a NAMES after a JOIN.
* Allow PART command so that client may lurk; reissue a JOIN to re-"open"
the channel on the client if a new open message arrives.
* Provide a fake MOTD to make some IRC clients happier.
* 353 (NAMES response) should have a single space character at the end
of each line per protocol (Gaim is strict about this).
