Incorrect cblas.h header

[serge-sans-paille]

On my linux machine, scipy-openblas64 installs a cblas.h version which contains

typedef void (*scipy_openblas_dojob_callback)64_(int thread_num, void *jobdata, int dojob_data);
typedef void (*scipy_openblas_threads_callback)64_(int sync, scipy_openblas_dojob_callback64_ dojob, int numjobs, size_t jobdata_elsize, void *jobdata, int dojob_data);
void scipy_openblas_set_threads_callback_function64_(scipy_openblas_threads_callback64_ callback);

The 64_ are misplaced :-/

[mattip]

Should be fixed on latest OpenBLAS HEAD. I will release a new wheel once #165 is merged and OpenMathLib/OpenBLAS#4794 is merged or otherwise solved.