Mark as BROKEN on powerpc64:

utgcns/libboost/boost/smart_ptr/detail/sp_counted_impl.hpp:81:5: error: 'get_deleter' declared as a 'virtual' field

This may have something to do with compiler:openmp in USES. However,
it has broken for more than 6 months at this point.

Approved by: portmgr (tier-2 blanket)