am 4273ce19: Merge "Doc change: Suggest min keysize of 2048 for keys." into froyo

Merge commit '4273ce19bf898ee41f2342209af6fe8ef4fb128e' into froyo-plus-aosp

* commit '4273ce19bf898ee41f2342209af6fe8ef4fb128e':
  Doc change: Suggest min keysize of 2048 for keys.