handle output of static libs

in numpy, for example:

``` Archive : wheel/numpy/core/lib/libnpymath.a 
wheel/numpy/core/lib/libnpymath.a(npy_math.o): 
wheel/numpy/core/lib/libnpymath.a(ieee754.o): 
wheel/numpy/core/lib/libnpymath.a(npy_math_complex.o): 
wheel/numpy/core/lib/libnpymath.a(halffloat.o):
```