lapacke.h has incorrect names when using SYMBOLPREFIX

[larsoner]

For example on latest develop:

$ make SYMBOLPREFIX=scipy_ USE_OPENMP=0 DYNAMIC_ARCH=0 USE_THREAD=0 TARGET=PRESCOTT
$ make SYMBOLPREFIX=scipy_ PREFIX=$PWD/install install
$ grep "dlange" install/include/lapacke.h 
double LAPACKE_dlange( int matrix_layout, char norm, lapack_int m,
double LAPACKE_dlange_work( int matrix_layout, char norm, lapack_int m,
$ nm -D install/lib/libscipy_openblas_prescott-r0.3.30.dev.so | grep dlange
00000000005c0cc0 T scipy_dlange_
0000000000b97ee0 T scipy_LAPACKE_dlange

But cblas.h is fine:

$ grep "dnrm2" install/include/cblas.h 
double scipy_cblas_dnrm2 (OPENBLAS_CONST blasint N, OPENBLAS_CONST double *X, OPENBLAS_CONST blasint incX);
$ nm -D install/lib/libscipy_openblas_prescott-r0.3.30.dev.so | grep dnrm2
00000000002ab200 T dnrm2_k
00000000000acae0 T scipy_cblas_dnrm2
00000000000ab580 T scipy_dnrm2_

So whatever logic is used for cblas.h for example should probably be adopted for lapacke.h rather than just copying (as it says during install currently: "Copying LAPACKE header files"). I have verified that a manual sed on the header works in another repo where I'm using scipy_openblas32 wheels with this prefix.

cc @isuruf since you worked on #4771 which seems like the most recent related issue/PR based on a very quick search!

If there are no other volunteers I can attempt a PR to fix this but my Makefile skills are not great so it might be a bumpy ride!