Replace LINPACK with LAPACK in DASSL

[ivan-pi]

The DDASSL routine uses the following double precision LINPACK routines:

• DGEFA/DGESL
• DGBFA/DGBSL

with dependencies on the following BLAS routines:

• DSCAL
• DAXPY
• DDOT
• IDAMAX

Ideally, we should replace the LINPACK routines with their equivalent LAPACK replacements: DGETRF/DGETRS (general) and DGBTRF/DGBTRS (banded).