Make mxTryHard() respect locally set 'Gradient algorithm' option.
Make mxTryHard() respect locally set 'Gradient algorithm' option.

This commit is in the same spirit as dd55516.

mhunter1/OpenMx,mhunter1/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,mhunter1/OpenMx,mhunter1/OpenMx,jpritikin/OpenMx,mhunter1/OpenMx,mhunter1/OpenMx,jpritikin/OpenMx