The addition of crsb_rows and crsb_cols to CompressedRowSparseMatrix
broke the build for problems with dynamic sparsity.
The fix is to remove unnecessarily filling of row_blocks and col_blocks,
which was triggering a check inside CompressedRowSparseMatrix around
block handling, since block structure makes no sense for matrices with
dynamic sparsity anyways.
Also added a test "dynamic_sparsity_test" based on i
examples/ellipse_approximation.cc
Thanks to Richard Stebbing for reporting this.
Change-Id: Ic1d49e97690ac17e0ea2949772271bd915277d68
Sameer Agarwal