checkpoint.hpp: implement for_sparse_jac with vectorBool.
checkpoint.hpp: implement for_sparse_jac with vectorBool.

wegamekinglc/CppAD,kaskr/CppAD,wegamekinglc/CppAD,kaskr/CppAD,kaskr/CppAD,kaskr/CppAD,kaskr/CppAD,wegamekinglc/CppAD,wegamekinglc/CppAD,wegamekinglc/CppAD