fix OS/2 bustage - don't have nsAutoArrayPtr's |operator= ( nsAutoArrayPtr<T>& )| take a const argument, because it needs to call .forget() on the new pointer to transfer ownership, and forget isn't const. r=bbaetz.

xpcom/base/nsAutoPtr.h

@@ -573,7 +573,7 @@ class nsAutoArrayPtr
           return *this;
         }
 
-      nsAutoArrayPtr<T>& operator=( const nsAutoArrayPtr<T>& rhs )
+      nsAutoArrayPtr<T>& operator=( nsAutoArrayPtr<T>& rhs )
           // assign by transferring ownership from another smart pointer.
         {
           assign(rhs.forget());