@variar changes are:
* Rename tarball to ${P} rather than just the version
* Remove cmake dependency - redundant when using cmake eclass
* Remove eapply_user call - cmake_src_prepare calls this
* Move configure args into mycmakeargs
* Use "usex" for configure ON/OFF via use flags
* Remove src_compile phase - default compile option does klogg
* Remove pkg phases and inherit xdg - are run automatically
Signed-off-by: Theo Anderson <telans@posteo.de>