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fix for "implicit" transfinite surfaces

rewrote generic newton with fd.

last func using GSL is minimize_N.

removed parFromPoint and closestPoint from GEdge; replace their use in
cgns code by appropriate reparamMeshVertex calls (not tested: I don't have
cgns)

removed now unused golden section minimizer (brent), now unused

More "numeric" work: removed all traces of Numerical Recipes, as the
NR license is incompatible with our use. Replaced with Lapack for
LU/SVD. Still need to recode newt & brent.

replace touchSubmatrix() & co with copy()

full code now works without GSL (even ho)

move integration routines to Numeric/

changed -part command line handling

in-house of blas/lapack)

without recompiling