call.c (add_function_candidate): Set LOOKUP_COPY_PARM for any constructor called with a single argument that...
* call.c (add_function_candidate): Set LOOKUP_COPY_PARM for any
constructor called with a single argument that takes a reference
to the constructor's class.
(BAD_CONVERSION_RANK): New.
(compare_ics): Use it to compare bad ICSes.
From-SVN: r161443
