Adding a dependency from a java_library to a scala_library, this should not trigger the build dependency missing warning.

Jmake's analysis file only contains the dependency class names, not the full path to the class file. This means it assumes
they are in the compiled java directory, meaning we get missing dependency warnings for scala files.

Changed to pick those up in the correct classes directory.

Reviewed at https://rbcommons.com/s/twitter/r/474/