The new version of pysimCoder requires "libgsl-dev"

[robertobucher]

I'm trying to put different integration methods in pysimCoder, using the GNU Scientific Library.

This library must be installed to prevent compilation errors.

Near to the standard RK4 algorithm there is now the possibility to choose between other integration methods, with fixed and variable step.

The new file getTemplates.py in supsisim contains the possible relations between the algorithm and the template Makefile. The algorithm can be chosen in the Codegeneration dialog, and only the possible variants are proposed.

I did some tests without problems, but feedback are welcome.