AUC TeX has abilities to run external command within Emacs
to format/preview/print document, and it is configurable
which command is invoked in each case. On the other hand,
FreeBSD ports collections have several variants which
format/preview/print TeX documents, and some of them conflicts
each other. So it is better to remove run-time dependency on
any specific formatter/previewer/printing utility and to let
each user select what he uses.
Committed with modifications, thanks!
(no need to bump PORTREV, whitespace)