Fix inner type declaration after DCE: we still may need inner type.

--HG--
extra : source : 8411d1a8b5dff28eb9dbb6130dea31fea79c3dcc
Fixed stub processing for DCE removed classes.

--HG--
extra : amend_source : 9d9193c42670444828a3b74f6c6fc15e713b6213
Finished IsIgnored/IsExternal/IsStubOnly attributes procesing for methods in DCE.
DCE/IsIgnored: We really need check only generic parameters, not return type or arguments.
DCE: Ignorance for field/type support.
Merge