Hiding Help Feature for VisIt 2.7, will re-enable when documentation catches up. Also including a minor patch for osxfixup

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/branches/2.7RC/src@21946 18c085ea-50e0-402c-830e-de6fd14e8384