Allow some numba errors on non-amd64, warn on non-x86

Allow some numba errors on non-amd64, warn on non-x86

Also one non-numba test that implicitly assumes 64 bit

Specifying the exception type allows only explicit errors,
not silently wrong answers

Numba has been observed to give wrong answers on mipsel,
and crash on armel (LLVM ERROR) and s390x (segfault).

Author: Rebecca N. Palmer <rebecca_palmer@zoho.com>
Forwarded: no

Gbp-Pq: Name numba_fail_32bit.patch