BUG: distutils: fix msvc+gfortran openblas handling corner case
BUG: distutils: fix msvc+gfortran openblas handling corner case

Ensure the openblas MSVC+gfortran temporary library names are unique
for the different openblas_* system_info classes.

If multiple openblas libraries (e.g. both a 32-bit and a 64-bit one) are
used in the same project, when compiling in the msvc+gfortran mode, this
previously resulted to only the last one being used.

grlee77/numpy,seberg/numpy,anntzer/numpy,charris/numpy,rgommers/numpy,numpy/numpy,numpy/numpy,WarrenWeckesser/numpy,numpy/numpy,anntzer/numpy,mhvk/numpy,WarrenWeckesser/numpy,abalkin/numpy,simongibbons/numpy,charris/numpy,anntzer/numpy,madphysicist/numpy,WarrenWeckesser/numpy,pdebuyl/numpy,mattip/numpy,mhvk/numpy,charris/numpy,seberg/numpy,pdebuyl/numpy,endolith/numpy,numpy/numpy,jakirkham/numpy,seberg/numpy,seberg/numpy,rgommers/numpy,WarrenWeckesser/numpy,rgommers/numpy,madphysicist/numpy,mhvk/numpy,pbrod/numpy,mattip/numpy,simongibbons/numpy,grlee77/numpy,charris/numpy,rgommers/numpy,abalkin/numpy,pdebuyl/numpy,jakirkham/numpy,jakirkham/numpy,endolith/numpy,abalkin/numpy,mattip/numpy,grlee77/numpy,WarrenWeckesser/numpy,pbrod/numpy,simongibbons/numpy,simongibbons/numpy,pbrod/numpy,madphysicist/numpy,madphysicist/numpy,pdebuyl/numpy,jakirkham/numpy,mhvk/numpy,madphysicist/numpy,endolith/numpy,anntzer/numpy,grlee77/numpy,mattip/numpy,mhvk/numpy,grlee77/numpy,pbrod/numpy,simongibbons/numpy,endolith/numpy,jakirkham/numpy,pbrod/numpy