[v3] Filter out basever symbols on Solaris

[Paolo Carlini]

On 03/06/2013 02:25 PM, Rainer Orth wrote:
> Unless those symbols were explicitly exported in config/abi/pre/gnu*.ver
> (which they are not, otherwise the x86_64-unknown-linux-bootstrap would
> have shown a failure), they couldn't make it into libstdc++.so.  They
> only occur on Solaris because gld explicitly adds them itself.
Ok then. In fact, I noticed only now that you already managed to boot & 
test on x86_64-linux too.

Thanks,
Paolo.