[boost] Add conversion op doc to scoped_ptr

From: cliffg_at_[hidden]
Date: 2004-12-22 14:11:00

This may already be known / in the queue / in CVS, but in 
case not ...

The scoped_ptr synopsis and members does not document the 
unspecified-bool-type conversion operator that scoped_ptr 
provides (I didn't check scoped_array to see if the same 
issue is present or not.) I found this when a couple 
members of my team converted code from shared_ptr to 
scoped_ptr, with the original code relying on the 
conversion operator, and I was surprised when everything 
compiled cleanly (without adding the appropriate get() 
calls).

Cliff