NO_CHANGELOG

NO_CHANGELOG

This way we get a build time warning if the var isn't defined at all, e.g.
a missing check_include_files() CMake call.

Instead of /usr/include/KF5/knotifyconfig_version.h.

For more details see:
kservice!79

GIT_SILENT

We've changed the repos that actually link against Qt6Core5Compat to make
the linking PUBLIC, so these calls can be removed now.

For more details see:
kcodecs!13 (comment 360380)

GIT_SILENT