OpenBLAS fixed in Xcode 11.2

[Marcus Calhoun-Lopez]

There is a pull request* that attempts to consolidate these fixes in a PortGroup.
As always, any input is appreciated.

-Marcus

* https://github.com/macports/macports-ports/pull/5673

> On Nov 1, 2019, at 3:08 AM, Christopher Jones <jonesc at hep.phy.cam.ac.uk> wrote:
> 
> Hi,
> 
> Good to hear. However, Xcode 11.2 has not fixed everything, as x265 still seg. faults when build with clang from Xcode 11.2.
> 
> cheers Chris
> 
>> On 1 Nov 2019, at 12:49 am, Jack Howarth <howarth.at.macports at gmail.com> wrote:
>> 
>>     Although it wasn't fixed in Xcode 11.2 beta 2, the -fcheck-stack issues with OpenBLAS's test suite are fixed in the final Xcode 11.2 released today.
>>         Jack
>