What's the purpose of hashtable::reverse()

[Ioi Lam]

This seems to be used only by CDS dumping, and if I remove the call 
nothing bad seems to happen. Does anyone know what hashtable::reverse() 
could possibly achieve?

Also, there's another variant that seems to be dead code that no one calls.

     template <class T, MEMFLAGS F> void Hashtable<T, F>::reverse(void* 
boundary)

- Ioi