* Simplify provides/conflicts/replaces
* Remove reference to mingw-w64-freetype which should be long gone
* Remove "replaces"; in some use cases one might rather stick with the
bootstrap version
* Explicitly enable/disable harfbuzz so the bootstrap version won't
accidentally depend on it if it is installed in the build environment
* Use an older glibc so resulting binaries can run
on older systems (without having to link statically
against glibc)
* Call packages static-compat-* to make it clear that
these packages are intended for compatibility with
older distributions
* Add further libraries to get static-compat-qt6-base
and some other static-compat-qt6-* packages building