[RFC] remove pre gcc-4.0 optimizations

[Andreas Jaeger]

On 12/28/2012 10:39 AM, Ondřej Bílka wrote:
> Hello, I noticed that headers contain optimized versions for gcc as old
> as 2.8 or before.
>
> To simplify code I would remove anything older than 4.0.0 (April 20.2005)
> as it is not relevant today.
>
> Is there a minimal gcc requirement to remove more definitions?

The installed headers should support older GCC versions. I think we 
discussed this in the past (this year) but don't remember the 
resolution, please search the archives,

Andreas
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