Merge -base and -contrib
    
    Contrib was merged to main repo long time ago.
    
    Makes the build process simpler.
    
    Modules enabled in minimum lives in
    %{_datadir}/selinux/minimum/modules.lst now.
    
    Fixes:
    RPM build warnings:
        File listed twice: /var/lib/selinux/mls/active/modules/100/unprivuser
        File listed twice: /var/lib/selinux/mls/active/modules/100/unprivuser/cil
        File listed twice: /var/lib/selinux/mls/active/modules/100/unprivuser/hll
        File listed twice: /var/lib/selinux/mls/active/modules/100/unprivuser/lang_ext
    
    [skip changelog]