[Nut-upsdev] newhidups: merged regex changes

[Peter Selinger]

I have gone ahead and merged the regex_branch with the main
Development branch.

Reason: recent renaming of files and moving around of code leads to
conflicts between the branches that will be increasingly difficult to
resolve.  It is easier to merge now while the two branches are still
relatively similar and most edits non-overlapping.

The merge is between tags before_PSE_6 and after_PSE_6 on the
Development branch.