bug#8404: Readd texinfo documentation for hostid and hostname.

[Philipp Thomas]

* Philipp Thomas (p...@suse.de) [20110401 17:07]:
> The manpage for hostid explicitely references coreutils.info but there the

Actually coreutils.info included in coreutils 8.10 has the documentation but
not coreutils.texi.


Philipp