588867 - entryusn plugin fails on solaris
https://bugzilla.redhat.com/show_bug.cgi?id=588867
Fix description: _sparcv9_AtomicAdd, _sparcv9_AtomicSub, and
_sparcv9_AtomicSet were not correctly declared. It brought
in the implicit function declaration, where the return value
were casted to 32-bit integer and the comparison against the
64-bit unsigned integer failed. The comparison was in the
endless loop and it caused the server hang.