update:

- FFTGF is being updated. keep using MKL interface for a while, but testing
are near end, using FFTPACK as in SciPy. MKL will remain as a valid alternative.

- small change in the configuration files bin/sciforvars.sh, etc/library.conf and
include/sfmake.inc. The user should make available and add to system the required libraries
(FFTPACK, MINPACK, QUADPACK) on his/her own. This means add library to system before compiling,
because include/sfmake.inc keep adding them to the linking line if precompiltion flags are set
to true. This is a temporary solution (see TODO)

TODO: set mandatory installation of required libraries: LAPACK, BLAS, FFTPACK, MINPACK, QUADPACK as in SciPy.
this will save me from using precompilation flags but somehow limit the usability of SciFor package.
However at some level this is a valid choice.