Revert the ctor/dtor alias optimization for now; the buildbots can detect
some failure here that I can't.

llvm-svn: 96612

Emit complete constructors and destructors as aliases to base constructors
and destructors when the two entities are semantically identical, i.e. when
the class has no virtual base classes. We only

Emit complete constructors and destructors as aliases to base constructors
and destructors when the two entities are semantically identical, i.e. when
the class has no virtual base classes. We only do this for linkage types
for which aliases are supported, i.e. internal and external, i.e. not linkonce.

llvm-svn: 96451

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Make sure to set vtable pointers in the destructors as well.

llvm-svn: 95525