Avoid use of "register" as optimization hint

[Joseph S. Myers]

On Fri, 7 Jun 2013, Roland McGrath wrote:

> The approval we got all those years ago to relicense pieces from GMP v1
> when it was under GPL (v1 I think) to glibc LGPLv1 (as it was then) is

I'd presumed that the code had been copied in when GMP and glibc were both 
under the same version of the LGPL (as they were for a long time) and so 
hadn't involved any special permission; I hadn't realised that there was a 
relicensing from GPL to LGPL involved when the code was added to glibc.

-- 
Joseph S. Myers
joseph@codesourcery.com