ome more performance tweaks, component invalidation changed and some tests fail.
cleanup in solvers
Merge pull request #1695 from Kenneth-T-Moore/bug

Reset pseudocomp count in solver tests to stop intermittent test failure
More performance tweaks.
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into bug
Merge pull request #1696 from setowns1/bug

More performance tweaks for NREL model.
fix the error that inherited list copy the argument "cases" not refered, which will get the new cases by the iterator at the runtime
Merge remote-tracking branch 'origin/dev' into dev
update to kriging
Merge branch 'dev' of https://github.com/OpenMDAO/OpenMDAO-Framework into dev
fixed tests and tightened up covergence tollerance
remove the needless line
fixed a couple of test failures caused by expecting ListCaseIterator to be inherited from list
Merge pull request #1699 from naylor-b/cwmine

small update to a pull request from @cwmine that updated ListCaseIterator so that ...
remove print
Merge pull request #1698 from JustinSGray/dev

Updated training method for Kriging
add random seed setting function to get repeatable result
Merge remote-tracking branch 'origin/dev' into dev
Merge pull request #1700 from cwmine/dev

add random seed setting function to get repeatable result for latinhypercube