The one that says this is an old wiki and will be retired is as it says the old wiki and it will be retired. The new one on the other hand does not at the moment allow for general editing.
https://wiki.remote-exploit.org/backtrack/ New and applies to bt 4
Offensive Security Training - BackTrack Wiki Old and pertains to everything before bt4
As for hcl just make a post in the relevant section here on the forums for now.