updates to check_gradient and added check_gradient to Component
updated Brent solver to use its upper_bound and lower_bound variables instead of high/low from the Parameter
working
Merge branch 'dev' of https://github.com/OpenMDAO/OpenMDAO-Framework into check_deriv
merged out
one more conflict
adding args to component check_gradient
Merge pull request #1551 from JustinSGray/check_deriv

Check derivatives for componentr