[MacPorts] #33107: avr-gcc: update to 4.6.2

[MacPorts]

#33107: avr-gcc: update to 4.6.2
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 Reporter:  marc.sowen@…               |       Owner:  titus@…           
     Type:  update                     |      Status:  assigned          
 Priority:  Normal                     |   Milestone:                    
Component:  ports                      |     Version:                    
 Keywords:  haspatch                   |        Port:  avr-gcc           
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Comment(by titus@…):

 I tested avr-gcc 4.6.2 on my machine with the old binutils 2.20, new avr-
 binutils-2.22, avr-libc 1.8.0; with and without LTO.

 Since I am not an everyday avr user I have included patch file Portfile-
 avrgcc.diff for review.

 I'll commit this beginning of next week if nobody complains.

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Ticket URL: <https://trac.macports.org/ticket/33107#comment:10>
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