Merged requested to merge feature/mutex_problem into devel
Implementing issue #190 (closed)
Two of the protected attributes (both
getXXX() functions that returned via reference. They have been changed to
consumeXXX() that returns them via
std::move so, emptying them after the call.
In the process, I identified that the list
Problem::state_block_list_ became useless some time ago. It was removed and all the associated machinery.