Fix NSOutlineView to conform to fixed NSTableView

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/branches/gnustep_testplant_branch@37446 72102866-910b-0410-8b05-ffd578937521

Source/NSOutlineView.m

@@ -110,7 +110,6 @@ static NSImage *unexpandable  = nil;
 - (void) _setObjectValue: (id)value
           forTableColumn: (NSTableColumn *)tb
                      row: (int) index;
-- (int) _numRows;
 @end
 
 // These methods are private...
@@ -1710,6 +1709,11 @@ Also returns the child index relative to this parent. */
   return;
 }
 
+- (NSInteger) numberOfRows
+{
+  return [_items count];
+}
+
 @end /* implementation of NSOutlineView */
 
 @implementation NSOutlineView (NotificationRequestMethods)
@@ -1914,11 +1918,6 @@ Also returns the child index relative to this parent. */
     }
 }
 
-- (int) _numRows
-{
-  return [_items count];
-}
-
 @end
 
 @implementation NSOutlineView (TableViewInternalPrivate)