(the ABIs that prescribe special treatment for aggregates with one
     scalar element don't either, since a "union containing a single scalar"
     is not the same as a scalar)
  * fixed passing record with a single float field on PowerPC/AIX abi's
  * several changes to cgobj and ncgutil to correctly deal with transfering
    such records between integer and floating point registers

git-svn-id: trunk@15416 -