[XeTeX] XeTeX incorrectly scales JPEG and other graphics files

[Akira Kakuto]

Hi Peter,

> 	diff playloud.xbb playloud.bb
> 	3,4c3,4
> 	< %%BoundingBox: 0 0 85 40
> 	< %%CreationDate: Sat Sep 13 00:18:46 2008
> 	---
> 	> %%BoundingBox: 0 0 297 140
> 	> %%CreationDate: Sat Sep 13 00:17:44 2008

I cannot understand this.
For bitmap graphics, I think
(ebb value) = (xbb value) * 72 / 100.

Best,
Akira