Improve access control diagnostics.  Perform access control on member-pointer
conversions.  Fix an access-control bug where privileges were not considered
at intermediate points along the inheritance path.  Prepare for friends.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95775 91177308-0d34-0410-b5e6-96231b3b80d8
20 files changed