Travis build for MacOS is failing

[pjotrp]

A recent update on Travis is causing gemma builds to fail: https://travis-ci.org/genenetwork/GEMMA/jobs/403562335

Notable gcc got upgraded to v8 and openblas to 0.3.1. I suspect the latter since I have seen other failures. I will try the new openblas on Linux soon.

[pjotrp]

Failing again due to openblas.

[pjotrp]

The problem is that gsl_blas_types.h defines

typedef  enum CBLAS_ORDER       CBLAS_ORDER_t;

and openblas cblas.h collides with

typedef enum CBLAS_ORDER     {CblasRowMajor=101, CblasColMajor=102} CBLAS_ORDER;