Fix versioned symbols from nm

[geohot]

Sometimes symbols have versions in libraries, then they can't be found by clang2py

000000000024c920 T hipLaunchHostFunc_spt@@hip_5.3                      
0000000000202b10 T hipLaunchKernel@@hip_4.2 

This fixes that

[rviollette]

Hi there,
I confirm 44830a6 fixes the non-determinism in the generated output.
Now, the output is always identical every time I run ctypeslib2.

Thanks