git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22643 b5f69653-2bf5-0310-8201-b0dafb8e1405
I want to be able to find out whether an analytic Jacobian is available, not just whether it has been switched on or not.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22657 b5f69653-2bf5-0310-8201-b0dafb8e1405