Hi.

I am attaching updated patches 4 and 5.
Unfold now works, and top-cap is painted when there is no rotation (transparent cube, zoom).

Remaining problems are:
- checkFTB sometimes doesn't work for inside cube.
- 2 sided inside cube looks very bad - the reversed viewport is painted on-top the current viewport. that's actually not a bug - this is how 2 sided *inside* cube should look, but it still looks bad and maybe we should disable that (i.e, make it impossible to set 2 sided inside cube).
- 2 sided cube: what should the clip-planes be? the current clip-planes are broken (try setting inactive opacity and minimize a window), but I really don't know what the correct clip-planes are.

Also, there is another bug, that was there before my patches: caps are painted wrong when inside cube and != 4 faces. Would be nice to fix that.

Thanks,
Roi.