Build buildplugin switcheroo
Switch canonical plugin-compilation script from rivet-buildplugin to rivet-build, with the active content now in rivet-build. rivet-buildplugin to be removed in 3.2.0.
Switch canonical plugin-compilation script from rivet-buildplugin to rivet-build, with the active content now in rivet-build. rivet-buildplugin to be removed in 3.2.0.