[WRAPPER] fenv exception mask transform

[yzewei]

Box64 failed to translate the fenv exception mask on non-x86 hosts, causing feraiseexcept/fetestexcept to malfunction, and NumPy to fail to trigger LinAlgError.

like:

test.py
import numpy as np
from numpy.linalg import inv

def cb(err, flag):
    print("errstate callback:", err, flag)

np.seterrcall(cb)
np.seterr(all='call')

a = np.array([[1.,0.],[0.,0.]])
print(inv(a))

The expected callback was to be triggered and a LinAlgError to be thrown, but this did not occur before the modification.