PATCH (libstdc++-v3 3.3): Re-enable i386/atomicity.h

[Loren James Rittle]

Phil wrote:

>> Nope.  <cpu>-<vendor>-<os> tuples will use config/cpu/<cpu>/atomicity.h by
>> default, if that file exists.

Benjamin Kosnik wrote:

> Ouch, forgot about this, sorry.

Don't feel bad, Phil caught this same issue before I committed the new
file to mainline.

> This should go in if possible, so that free unix distros built for
> i386 won't be weak...

As Mark OK'd it in private e-mail: Installed on 3.3 branch after fully
bootstrapped in context on i386-unknown-freebsd4.8.  PR closed.