r266: * FHS complience. Patch from Johnie Ingram <johnie@netgod.net>.

r266:    * FHS complience. Patch from Johnie Ingram <johnie@netgod.net>.
     For the most part, this was a straight-forward substitution,
     dh_installmanpages needed a non-obvious change though.
   * Closes: #42489, #42587, #41732.
   * dh_installdocs: Adds code to postinst and prerm as specified in
     http://www.debian.org/Lists-Archives/debian-ctte-9908/msg00038.html,
     to make /usr/doc/<package> a compatability symlink to
     /usr/share/doc/<package>. Note that currently if something exists in
     /usr/doc/<package> when the postinst is run, it will silently not make
     the symlink. I'm considering more intellingent handing of this case.
   * Note that if you build a package with this version of debhelper, it will
     use /usr/share/man, /usr/share/doc, and /usr/share/info. You may need to
     modify other files in your package that reference the old locations.