making changes to mkinstaller to deal with OSX 10.9.2 clang update causing former warnings to be promoted to errors.  this fix demotes them back down to warnings.
Merge branch 'dev' of http://www.github.com/OpenMDAO/OpenMDAO-Framework into dev
first part done
error checking in place
small fix
Merge pull request #1683 from setowns1/bug

Minor get/set speedup, fix Instance.get_attribute()
Merge pull request #1684 from Kenneth-T-Moore/deriv

Better control of and handling for forward vs adjoint
removed sympy dependency
Merge pull request #1685 from naylor-b/remove_sympy

removed sympy dependency
small fixes
Merge pull request #1686 from Kenneth-T-Moore/deriv

Fixing a test failure
changes to go-openmdao.py for osx install
Merge branch 'dev' of http://www.github.com/OpenMDAO/OpenMDAO-Framework into dev
uncommenting out the go-file changes that had been commented out
Merge pull request #1688 from kmarsteller/dev

OSX 10.9 compiler errors turned to warnings
Tweaks to CaseIteratorDriver for sequential evaluation.
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into bug