With JDK 11 and JPMS we need to make sure we create proxies with sensible names that fall into existing modules.

However, in case of a hierarchical interface structure where interface A is in package foo.bar and interface B extends A is in foo.quax, it may currently happen that we generate a proxy starting with foo.quax.A$B$.. meaning the package name and the first class name are a mismatch.

We need to alter the naming algorithm to prevent this.

A reproducer can be seen on my branch along with a WIP fix.