gplugin/gplugin

Use meson.project_build_root instead of meson.build_root

2021-10-07, Elliott Sales de Andrade
ad3ceac87107
Use meson.project_build_root instead of meson.build_root

The former is new in 0.56, but we require 0.58 and so the latter causes a
deprecation warning.
syntax: glob
.*.swp
*.debhelper
*.orig
*.pyc
*.ui~
\#*.ui\#
syntax: regexp
^build.*\/
^packaging\/debian\/tmp\/
^packaging\/debian\/(.+\.)?(substvars|debhelper\.log)$
^packaging\/debian\/build.*\/
^packaging\/debian\/libgplugin0?(-.+)?\/
^packaging\/debian\/gir1.2-gplugin-0.0\/
^packaging\/debian\/files$
^po\/.*\.pot$
^obj-x86_64-linux-gnu\/
^debian\/?$
^subprojects\/.+\/