[build, testsuite, v3] Increase gcc, g++, gfortran and libstdc++-v3 testsuite parallelism

[Mike Stump]

On Jul 21, 2010, at 2:54 AM, Rainer Orth wrote:
> make check times on slow machines with many cores (like the
> UltraSPARC-T1/T2) is currently limited by too little parallelism in the
> testsuite.

Thanks for your efforts.