[udesk/dante] Remove needless spacing.
[udesk/dante] Streamline switch entry.
[udesk/dante] Minor refactor.

Rename sdl_rc to swin for window objects.
[udesk/dante] Implement udeskGetWindowHandle.

Implement udeskGetWindowHandle to query window
handle properties, minor style fixes.
[udesk/dante] Avoid casting to UDenum.

Avoid casting since UDenum could be smaller than
UDint, we don't need casting there, so avoid it.
[udesk/dante] Implement integer and handle queries for window.

Implement many queries and settings for window objects,
size, position, handle queries and mapping hints.
[udesk/dante] Minor code style improvement.