added maximum time to coin solvers
added a notion over verbosity to solvers and fixed an exclusive orders bug
now solve fully linear problems with the primal method
fixed bugs where bounds were not being correctly set with non-excl prgo solver
solve graph now returns the objective value directly
added some more verbose reporting if asked and fixed a bug where exclusive rows were being added if the solver had been declared not exclusive
updated greedy solver to add an objective penalty for requested flows that are not met. the objective value it reports is now directly comparable to that of the optimization solvers
only access capacities if they aren't empty
errant o
merging from origin