[Mono-winforms-list] Private ImageList methods removed in r69012

[Kornél Pál]

Hi,

The removed methods were private but they were intended to be used by 
designers.

This feauture is documented:
http://msdn2.microsoft.com/en-us/library/53b8022e.aspx

Also note that I noticed the behavior in Visual Studio designer that can 
only be implemented using these methods.

And I belive that it is legal to call these methods using reflection and 
study their behavior altough it wasn't necessary.

Applications should not rely on the presence or absence of these methods if 
they are private but a properly implemented designer (or maybe other 
applications) can call these methods and the absence of these methods will 
result in different designer behavior regarding the default property values.

Kornél