world: rework cmake sanity and sysroot alignment

This is a panic commit in the middle of development - have the feeling my host
dies...

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>

classes/kde-base.bbclass

@@ -17,7 +17,7 @@ ${KDE_MIRROR}	http://kde.c3sl.ufpr.br \n \
 SRC_URI = "${KDE_MIRROR}/stable/${BPN}/${PV}/src/${BPN}-${PV}.tar.xz"
 
 # extra-cmake-modules cause dependent to check for python
-inherit cmake_qt5 cmake-extra-sanity pythonnative
+inherit cmake_qt5 cmake_extra_sanity pythonnative
 
 do_compile_prepend() {
     export XDG_DATA_HOME=${STAGING_DATADIR}