requestStaticInjection should not imply a request for static injection on superclass members

_From [dpb@google.com](https://code.google.com/u/100192069068331572908/) on February 10, 2011 14:31:04_

It is surprising to me that requestStaticInjection on a class implies a request for static injection on its superclass(es).

It means, for instance, that if classes A, B, and C all have injected static members, and B extends A and C extends A, then there is no way to inject the static members of A, B, and C only once; the static members of A will be injected at least twice.

I understand this represents a change to the public API. But I think it's at least worth discussing.

_Original issue: http://code.google.com/p/google-guice/issues/detail?id=601_