Undo the renaming of the Unicode data files; the simple

Undo the renaming of the Unicode data files; the simple
solution being not including the *.html files.  This means
that in the future there is no need for any renamings
(well, assuming that the Consortium doesn't cause any),
and the files are named like they are in the Consortium
website, thus alleviating confusion.

p4raw-id: //depot/perl@14370