This commit adds option to select the kind of norm to use in the KSL procedure. KSL
needs to estimate matrix norm to call dexp_mv. The interface to the function normest changed here.
It is called only before calling extlib, so only few changes were introduced to the main KSL function
This commit adds option to select the kind of norm to use in the KSL procedure. KSL needs to estimate matrix norm to call dexp_mv. The interface to the function normest changed here. It is called only before calling extlib, so only few changes were introduced to the main KSL function