[Bf-cycles] Patch: Reduce hopping when switching between perspective and ohthographic on 3D view

[Yasuhiro Fujii]

I would be grateful if this patch would be reviewed.

Patch:
http://projects.blender.org/tracker/index.php?func=detail&aid=29142&group_id=9&atid=127

Before patched, when pressing F5:
http://mimosa-pudica.net/tmp/blender-orth-before.gif

After patched:
http://mimosa-pudica.net/tmp/blender-orth-after.gif

-- y.fujii