[PATCH, libstdc++]: Increase timeout for testsuite/ext/pb_ds/regression tests

[Paolo Carlini]

Uros Bizjak wrote:
> I think that simulators represent different class of targets, so they
> should be treated separately. In fact, the test is changed for the
> simulator by limiting the number of cycles, and IMO this is not
> desirable for native targets i.e. - alpha* would run a different test
> than other targets.
>
> Also, recent usage of dg-timeout-factor has shown, that adding target
> selector to this dg-directive is more of an exception than a general
> rule. If the test timeouts on one target, it is quite possible that it
> will timeout on others too.
>   
I see. Patch is OK (for now at least)

Thanks,
Paolo.