Bug#401089: perltw.1.gz: add viewing instructions

[jidanni at jidanni.org]

Now it looks terrible in all locales:

PERLTW(1)                 Perl Programmers Reference Guide                PERLTW(1)

NAME
       perltw - XXXX Perl XX

DESCRIPTION
       XXXX Perl XXX!

       X 5.8.0 XXX, Perl XXXXXX Unicode (XXX) XX, XXXXXXXXXXXXXXXXXXX; CJK (XXX)
       XXXXXXXX.  Unicode XXXXXXX, XXXXXXXXXXXX: XXXX, XXXX, XXXXXXXX (XXX, XXXX,
       XXXX, XXXX, XXX, XXXX, XX). XXXXXXXXXXXXXX (X PC XXXX).