Change structure to store grid geometry.

Change structure to store grid geometry.
Change grid_set function to accept grid geometry.
Add monitor_virtual_size_set function.
Only update livethumb preview size if we are not manually resizing.
Don't need to set the resolution text during smart_resize.
Add functions to convert coordinates to/from virtual to canvas.
Add function to find the closest randr mode to a given size.
Add function to handle user manual resizing.

Signed-off-by: Christopher Michael <cp.michael@samsung.com>
SVN revision: 84170