A full mangled name of a declaration is a mangled name that includes
the mangled names of all the declaration's parents.
We don't use full mangled names for building `IdSignature`s. We use them
in two places:
- Generating stable names for JavaScript functions in Kotlin/JS
(see `NameTables.kt`)
- Generating names for LLVM symbols from lowered IR functions in
Kotlin/Native (see `BinaryInterface.kt`)
In both of these places we run the IR mangler, hence we don't need this
functionality in other manglers.
Sergej Jaskiewicz
47f8dedfa5