[f2py] Raise exception from inside wrapped fortran code

[Pearu Peterson]

James Kermode wrote:
>
> I've included my test program below (two modules are required because
> f2py gets confused by the bind(c) stuff). 

May be the g77 compiler is confused by the bind(c) stuff.. You should
use --fcompiler=gnu95 f2py flag with gfortran.

Not sure if it matters but try also f2py threadsafe statement via !f2py
directive.

Pearu