Fixes #8079.  Change tundra ComboBox to use spriteArrows.png instead of comboArrowDown.gif (still being used by dojox.Calendar).
Fixes #8079.  Change tundra ComboBox to use spriteArrows.png instead of comboArrowDown.gif (still being used by dojox.Calendar).

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@19991 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful