Split Debian and Ubuntu build dependencies, as "kernel-package" is not
available, but also not needed in newer Debian releases.
Add some other dependencies dpkg-buildpackage was complaining about.
With these dependencies the tkg kernel builds in a freshly bootstrapped
Debian "Buster" container.
Fix MuQSS illegal character uppercase in source package name
Fix _cpusched not being sourced for package name
Fix llvm not in package name when using llvm
