GS A4 format workaround truncates images

[Marc Fonvieille]

Hey,

I just noted our workaround to allow build with "GS A4" truncates
images, have a look at:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/ipsec.html
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/vinum-access-bottlenecks.html

etc.

If you try a build with previous Groff options i.e.:

PIC2PS?=	${GROFF} -p -S -Wall -mtty-char -man

the images are OK.