Remove calls to std::make_unique from Computation
Remove calls to std::make_unique from Computation

std::make_unique requires C++14 (which libspf was using), and
IEGenLib builds with C++11.

CompOpt4Apps/IEGenLib,CompOpt4Apps/IEGenLib,CompOpt4Apps/IEGenLib,CompOpt4Apps/IEGenLib,CompOpt4Apps/IEGenLib,CompOpt4Apps/IEGenLib,CompOpt4Apps/IEGenLib