Eclipse is a common IDE used for Android development. Thus, the question is appropriate.
I don't follow your logic here.
Eclipse is a common IDE used for Android development. It's not an actual programming issue, per se, but it closely related. The C++ forum is loaded with questions on linker/library errors and so on. Those are no less legitimate than the question posed in this topic.
As a general advice, I think pointing the OP to the Eclipse forum was the right thing to do. He did not ask anything specifically game-related, and the Eclipse forum is much more knowledgeable on details of its software. It also has many more users, so the OP will get a response much quicker.
Just like you won't answer questions on how to switch on a computer (even if such a device is quite generally used for programming computer games :p )
I'm not debating the validity of the advice in the first reply. However, I don't see a problem with its place in this forum. And, you have to admit that the "how to switch on a computer" example is a mighty stretch, here. I'm not saying common sense should be eschewed or anything.