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[Lapack] GSVD and Level 3 BLAS

Dear LAPACK team members,

the current LAPACK (3.5) GSVD solver xGGSVD calls xGGSVP in order to
preprocess the matrices. xGGSVP repeatedly computes QR factorizations
using level 2 BLAS (xGEQPF, xGEQR2). Is the lack of a GSVD solver
utilizing level 3 BLAS operations intentional? Or is it simply due to lack
of time and funding to implement this?

Yours faithfully
Christoph Conrads

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