* The code to draw only visible items was not working, giving slow
performance with many files (bug #19469).
* Fix detailed list display on non-windows, would give overlapping text.
* Fix folders with many files not displaying all items, changed short to
int in various places, was overflowing.
* Recreate layout on area resizes, file view gets out of sync otherwise.
* Workaround for v2d height not being correct with image display due to
scrollers.
* Fix view2d code to compute minimum scroller size, this would make the
scroller go outside of its bounds.
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