Gin does not respect injection order when subclassing

[metteo]

Originally reported on Google Code: #199 / #199

What steps will reproduce the problem?
According to the Guice injection points document at: guice/wiki/InjectionPoints injection methods of super classes are called before the methods of a subclass.

In Gin methods are sorted alphabetically meaning that some methods in sub class maybe called before methods from super class.

What is the expected output? What do you see instead?
I expect order of invocation as described in Guice Wiki

What version of the product are you using? On what operating system?
GWT 2.6.1 / GIN 2.1.2

Please provide any additional information below.
zip file with a test case attached in the original issue comments section

[metteo]

The root cause is usage of TreeSet in MemberCollector.java:251. Methods are added to it in the order from super class to subclass and overrides are filtered out by the comparator. Unfortunately the side effect is that the order in which items are added is lost because of the sorting capability of TreeSet.