* ContainerControl.cs: set activeControl for parent forms up the

* ContainerControl.cs: set activeControl for parent forms up the
tree when the new activecontrol is a container.
When validating the active control, if it is a container, also
raise up the validation for it's active control. Fixes #80280

* Control.cs: Add internal property flag and check to prevent
Focus events from getting raised when Select() is called for
a ContainerControl. There are still too many focus events being
raised at the moment though.
Cleaned up the code a bit.

2006-12-22  Andreia Gaita  <avidigal@novell.com>

svn path=/trunk/mcs/; revision=69980