[Testsuite] random shuffle moveable issue

[Aurelio Remonda]

Hello, i was running gcc tests on RTEMS, with rtems-testing and qemu
simulating a realview pbx a9 board.
On the libstdc++ summary i got this failure (among others).
FAIL: 25_algorithms/random_shuffle/moveable.cc execution test.

When debugged it turns out that all three VERIFY pass (cout of the
same line gave 1, is an equal) but i didn't get the exit code 0 at the
end of the simulation. Apparently, this is making DejaGNU think
something's wrong. If i reduce the size of A (the array that contains
the values being shuffled) the test runs correctly.

If this can be modified i will be happy to send the patch.
Thank you.