Weak perl-Encode-devel dependency on perl-devel to Recommends level
    
    perl-Encode-devel package does not need perl-devel for running. But
    the files it produces needs perl-devel for futher building them. But
    the building is not job for the perl-Encode-devel. Therefore the hard
    dependency on perl-devel is wrong.
    
    On the other hand, there is other meaningful usage for the genererated
    files than bulding them. Therefore we keep the dependency on
    Recommends level.