gplugin/gplugin

Prepare for the 0.34.0 release
v0.34.0
2021-09-24, Gary Kramlich
77a1778c7a1b
Prepare for the 0.34.0 release

Testing Done:
ran `meson-dist`

Reviewed at https://reviews.imfreedom.org/r/936/
configure_file(
input : 'gplugin.spec.in',
output : 'gplugin.spec',
configuration : version_conf)