Merge pull request #1546 from Kenneth-T-Moore/settings

Settings for user control of the gradient solution
fix for test failure
Merge pull request #1547 from Kenneth-T-Moore/nastran

fix for test failure
Updated ClusterAllocator selection and configuration
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into bug
Merge pull request #1548 from setowns1/bug

Updated ClusterAllocator seletcion method and configuration from resources.cfg
extended options