2009-11-30 Marek Habersack <mhabersack@novell.com>

2009-11-30  Marek Habersack  <mhabersack@novell.com>

	* WebControl.cs: HasAttributes made available as internal for 1.1
	Avoid calling the Attributes getter many times in
	CopyBaseAttributes.
	If TrackViewState is called and attributes state bag already
	exists, mark all items in the latter as dirty.

	* CheckBox.cs, Button.cs, ImageButton.cs, LinkButton.cs: do not
	create the Attributes collection if not necessary.

svn path=/trunk/mcs/; revision=147094