For #2390, support Python packages within Chaste.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@19842 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2390 - change generated Python code to use the fc package.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@19843 b5f69653-2bf5-0310-8201-b0dafb8e1405