e37d669dc3
It is hard to run FileCheck tests over generated ObjC bridges because
they share the same name ("objc2kotlin"). To overcome this hurdle,
this commit introduces a compiler flag that appends function name to
"objc2_kotlin". This change might be useful for end-users, for example,
it makes stacktraces more readable. But it will require additional
testing and polishing which is out of the scope of this change.