Fix AOCL detection at WSClean

[AlexKurek]

Description

libflexiblas.so was linked, where AOCL is not registered. This changes:

-- Found BLAS: /usr/lib64/libflexiblas.so
-- Found LAPACK: /usr/lib64/libflexiblas.so;-lm;-ldl

to:

-- Found BLAS: /opt/aocl/5.1.0/aocc/lib/libblis-mt.so
-- Found LAPACK: /opt/aocl/5.1.0/aocc/lib/libflame.so;/opt/aocl/5.1.0/aocc/lib/libblis.so

BTW: there is 5.2 version where they added drop-in replacement for FFTW.

[tikk3r]

Hmm I'll have to look a bit more into this as BLIS is a BLAS library and FLAME a LAPACK one. WSClean also found this correctly in my last 6.1.1 build:

-- Found BLAS: /opt/aocl/5.1.0/aocc/lib/libblis-mt.so
-- Found LAPACK: /opt/aocl/5.1.0/aocc/lib/libflame.so

[AlexKurek]

I confirm, current master finds AOCL correctly. Im sorry for the confusion.

BTW:
Current master crashes at DDFacet:

  /opt/lofar/DDFacet/DDFacet/Gridder/old_c_gridder/JonesServer.c:276:33:
  error: assignment to ‘int *’ from incompatible pointer type ‘long int *’