* FormHandleTest.cs, ControlEventTest.cs, MenuStripTest.cs,

* FormHandleTest.cs, ControlEventTest.cs, MenuStripTest.cs,
  ProgressBarTest.cs, RichTextBoxTest.cs, ListViewEventTest.cs,
  TreeViewTest.cs, ColumnHeaderTest.cs, ApplicationContextTest.cs,
  MdiFormTest.cs, MenuItemTest.cs, TextBoxTest.cs, ListBoxTest.cs,
  ToolStripTest.cs, ToolStripMenuItemTest.cs, ControlTest.cs,
  ToolBarTest.cs: Dispose of the 61 forms we were keeping open while
  running the tests.
* ApplicationTest.cs: Dispose of the 61 forms we were keeping open
  while running the tests. Added OpenFormsTest.
* FormTest.cs: Dispose of the 61 forms we were keeping open while
  running the tests. Added DialogOwnerTest.

svn path=/trunk/mcs/; revision=76241