gplugin/gplugin

Add gplugin-gtk4-viewer and its man page to the rpm spec file

2021-10-24, Gary Kramlich
b64f768f9f66
Add gplugin-gtk4-viewer and its man page to the rpm spec file

Testing Done:
Ran the `fedora-34-amd64` convey plan successfully.

Reviewed at https://reviews.imfreedom.org/r/1097/
if get_option('nls')
i18n.gettext(GETTEXT_PACKAGE)
else
summary('translations',
'You have disabled installation of translations which means ' +
'English will be the only available language.',
section : 'Warnings')
endif