[avr-gcc-list] disregard avr 32 bit math bug

[Shaun Jackman]

Doh. I should learn to always sleep on a bug report before I send it 
off. Of course I was mistaken.
1. sbiw *does* set the zero flag.
2. r1 is the zero register, or is supposed to be. The reason this 
caused a problem for me was because my crt*.s didn't clear the zero 
register. A non-zero zero register causes a lot of trouble.

Thanks,
Shaun

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