Making +gcc47 the default variant

[Ryan Schmidt]

On Feb 26, 2013, at 15:04, Jack Howarth wrote:

> FYI, the problem with gcj on darwin9 is that FSF gcc now emits epilogue
> notes in the  _eh_frames which causes the system unwinder on darwin9 to
> puke. Fortunately, when the compact unwinder was added in darwin10, the
> old system unwinder was replaced with a compatibility unwinder which
> tolerates the epilogue notes in _eh_frames. A patch for darwin9 was proposed
> awhile back but never progressed into gcc trunk...
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41991#c49


But gcj is only disabled in MacPorts gcc46. It's enabled in gcc45 and gcc47.