- resetAngles still needs to request a zoom to fit or the ctrl-0 action doesn't zoom to fit

- more elegant version of ded0a9b, do not zoom to fit in setDocument, instead zoom to fit before rendering

- use #pragma once for the gl compiler header

- when setting the current document, the GL compiler must be told that a merge is necessary *before* setting the renderer's document as setDocument will call zoomToFit which renders the scene. this rendering must trigger a merge or ldforge crashes if a new document is created when a document is already open.

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mercurial