-Wdeprecated-clean: Fix cases of violating the rule of 5 in ways that are deprecated in C++11

LoadedObjectInfo was depending on the implicit copy ctor in the presence
of a user-declared dtor. Default (and protect) it in the base class and
make the devired classes final to avoid any risk of a public API that
would enable slicing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244112 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed