Tests on KDE CI currently all fail because the CI currently has been setup
to somehow expect ECMEnableSanitizers.cmake being included with any project
and thus being instructable to use ASAN. If not possible, things fail
somehow.
While that possibly should be sorted out to not being enforced,
having ASAN being used at least with the KDE CI should improve Marble's code
checking.
Including ECMEnableSanitizers.cmake should not have any sideeffects,
unless ECM_ENABLE_SANITIZERS is set.
See http://api.kde.org/ecm/module/ECMEnableSanitizers.html