Make nCalls column have width 11.
Fix broken libtool script with install-data-hook commands.

Issue #107.
Reduced Basis change: Removed singe_matrix_mode. The purpose of this mode was to provide a low-memory version, which re-assembled matrices rather than storing them. But it wasn't used and therefore wasn't well tested, and it complicated the code for little benefit. If this functionality is desired in the future, better to put it in a subclass.
Fixes for PetscInt!=int compatibility
Rb stuff needs a non-const reference to dof_indices.
Use accessor API for FEMContext.
Update solvers to use updated FEMContext API.
Need non-const versions of these accessors. I'm not convinced this
is the right way to go here, but rolling with it for now.
Updating reduced_basis to use new FEMContext API's.
Assert on the private data structures.
Update to use new FEMContext API. Also needed a
non-const Elem&.
Return a reference to the QBase instead of a pointer.
Now make everything protected/private. The library builds for me,
but the examples still need to be updated so likely make check
will fail at this point.
Updated adjoints_ex1 to use the new FEMContext API.
Update adjoint_ex2 for new FEMContext API.
Update adjoints_ex3 to use new FEMContext API.
Updated adjoint_ex4 to use updated FEMContext API.
Updated adjoints_ex5 to use updated FEMContext API.
Updated fem_system examples to use updated
FEMContext API.
Updated reduced_basis examples to conform to new
FEMContext API.