kpackage_install_bundled_package used install(CODE ..) for the
generation and installation of the rcc file. This had multiple flows,
- It didn't respect the DESTDIR variable of install target which made
most of distribution packaging fail as it tried to write to installation
prefix directly.
- It used the execute_process which resulted in the rcc file generation
at time of install instead of the build-time, so it would fail with
permission errors if make install is run as normal user