Resurrected vineyard code:
* Switched StaticPersistence + (serializable) Filtration to Boost.MultiIndex
* Updated DynamicPersistenceTrails to work with the new MultiIndex way
* Created LSVineyard class, and fixed the grid examples
Write an audit for the data structure.
-DBOOST_UBLAS_TYPE_CHECK=0 is necessary since otherwise Boost's uBLAS gives a compile-time error
when it doesn't find sqrt for polynomials. It doesn't actually need it (e.g., for LU-decomposition,
but it looks for it during type check). (File a bug report with Boost?)