Restructure MapGuide-specific widget code

[pagameba]

The current Print widget and probably some other widgets (Select Within comes to mind) only support MapGuide since we brought over code from the AJAX viewer, but the code has been placed in subdirectories under the widgets folder. This needs to be reorganized to put the code into a MapGuide directory (within each widgets' supporting folder) so that we can properly support MapServer when the time comes to implement it.

I would like to see the code reorganized into an architecture/language structure (for example):

widgets/Print/MapGuide/php/

The client-side code will have to be updated to get the current architecture and script language from the Map instance.

[pagameba]

It would also be beneficial to either implement MapServer support for each widget or, as a minimum, disable the widget if the current architecture is not supported by the widget.