Fix dependencies of qemu metapackage
    
    Commit 7a925b3802 ("spec: More RHEL merging") placed the %description
    section right up against the list of Requires.  This resulted in RPM
    silently ignoring the Requires and adding them to the description
    instead.  As a result the qemu metapackage was totally broken.
    
    Fixes: commit 7a925b3802f503a5966273e8848b1d3b05376f25