pkg/54623: make gnuplot-pdf-doc optional in graphics/gnuplot

[joern.clausen%uni-bielefeld.de@localhost]

>Number:         54623
>Category:       pkg
>Synopsis:       make gnuplot-pdf-doc optional in graphics/gnuplot
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Oct 17 14:05:00 +0000 2019
>Originator:     Joern Clausen
>Release:        
>Organization:
Bielefeld University
>Environment:
>Description:
Please consider changing the option "gnuplot-pdf-doc" in graphics/gnuplot from a default one to an optional one. In order to build one single PDF file (which is easily findable on the web), ca. 50+ of TeX related (and not so related) packages are built, if they are not present. For the casual user, who wants to quickly generate a plot, this detour is a major annoyance.
>How-To-Repeat:

>Fix: