[Bonmin] B-OA ignoring bonmin.milp_solver option

[Miles Lubin]

Hello,

I'm calling bonmin from the command line with the options
bonmin.milp_solver=Cplex and bonmin.algorithm=B-OA, but the option to
use Cplex seems to be ignored. Is this the proper way to force the OA
algorithm to use Cplex?
I'm sure that Bonmin has been compiled correctly with Cplex, because I
can tweak the source code here:
https://projects.coin-or.org/Bonmin/browser/trunk/Bonmin/src/Algorithms/BonSubMipSolver.cpp#L51
to force ivalue = 2, in which case cplex runs as expected.

Thanks,
Miles