bug#49503: Mention workarounds, so one could achieve the Debian version sorting algorithm

[積丹尼 Dan Jacobson]

(info "(coreutils) Differences from the official Debian Algorithm") and
(info "(coreutils) Minus/Hyphen and Colon characters")
could mention workarounds, so one could indeed achieve the Debian
Algorithm.
Or mention the only way is to use
dpkg --compare-versions
(on pairs only.)