[feature] Fix name confusion due to multiple overridden methods with the same name

[sad-dev]

I ran into problems on an obfuscated jar. The essential code is as follows:

interface A {
  B a();
  C a();
};
abstract class B implements A {
  @Override
  C a() { ... } ;
};
class C extends A {
  @Override
  B a() { ... };
};

Deobfuscation renames the first a method, but class B ends up with the wrong alias. This also happens if the renaming is done manually.

interface A {
  B xxx();
  C a();
};
abstract class B implements A {
  C xxx() { ... } ;
};
class C extends B {
  B a() { ... };
};

I suspect this is due to overly lax (name based instead of prototype based?) identification of MethodNodes or MethodInfo objects. Also not too sure how easy it would be to triage and fix, so submitted as a feature request

[skylot]

Fixed.
@sad-dev thanks for test case!