libdeng2|Refactor: Revised RectangleRule and DelegateRule implementation
RectangleRule was improved so that the horizontal and vertical rulesare separate from each other: invalidating a horizontal input willonly invalidate horizontal outputs.
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libdeng2|Refactor: Revised RectangleRule and DelegateRule implementation
RectangleRule was improved so that the horizontal and vertical rules
are separate from each other: invalidating a horizontal input will
only invalidate horizontal outputs.