[MacPorts] #29184: gcc46: update to 4.6.1

[MacPorts]

#29184: gcc46: update to 4.6.1
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 Reporter:  luis.beca@…          |       Owner:  mww@…           
     Type:  update               |      Status:  new             
 Priority:  Normal               |   Milestone:                  
Component:  ports                |     Version:  1.9.2           
 Keywords:  haspatch             |        Port:  gcc46           
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Comment(by vince@…):

 I filed a radar for this ld bug. I have also stumbled on a ar/ranlib bug
 while compiling atlas, so it seems the whole toolchain is more or less
 buggy.

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Ticket URL: <https://trac.macports.org/ticket/29184#comment:14>
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