pkg/55077: www/w3m has obsolete w3m-image-gdk-pixbuf option?

[isaki%pastel-flower.jp@localhost]

>Number:         55077
>Category:       pkg
>Synopsis:       www/w3m has obsolete w3m-image-gdk-pixbuf option?
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar 17 11:45:01 +0000 2020
>Originator:     Tetsuya Isaki
>Release:        NetBSD-9.0 + pkgsrc-2019Q4
>Organization:
>Environment:
NetBSD 9.0 amd64
>Description:
www/w3m has w3m-image-gdk-pixbuf option in options.mk
but graphics/gdk-pixbuf seems to be gone(?).

My /etc/mk.conf has had this option (for long time), and
I was able to compile w3m successfully by removing this option.
>How-To-Repeat:
# grep w3m /etc/mk.conf
PKG_OPTIONS.w3m+=w3m-image-gdk-pixbuf
# cd /usr/pkgsrc/www/w3m
# make show-options
make: "/usr/pkgsrc/www/w3m/options.mk" line 51: Could not find ../../graphics/gdk-pixbuf/buildlink3.mk
make: Fatal errors encountered -- cannot continue

>Fix: