#11 libsbml doesn't work with vckpg libraries

[Andy Somogyi]

libsbml uses it's own library finding code in cmake. If this were changed to to use the standard built-in cmake find_package(...) routines, it would work out of the box with vcpkg libraries. This would make building on windows a lot easier.

[Lucian Smith]

Moved to https://github.com/sbmlteam/libsbml/issues/245