[Legacy] Animation.AddClip major memory issue

Hello,

I just wanted to give a little warning : if you use Animation.AddClip() in your scripts, it'll duplicate the AnimationClip in the memory instead of sharing it like if you have added it to your gameObject within the Editor.
A warning note in the documentation would have been very welcome.

Fortunately, I had already planned & started to move to Mecanim, else it'd have probably lead to some serious big delay in my game release to handle advanced dynamic level load/unload, as it was doubling the memory requirement for my game & thus would have lead to break over the 4GB limit.

Note: this problem has already been reported here http://forum.unity3d.com/threads/bug-unity-not-releasing-animationclips.129916/ , but it was not the main topic of that thread.