[dvipdfmx] writing an uncompress stream

[Ulrike Fischer]

Dear Akira,

>> What could be used with dvipdfmx?

> Is local change necessary?
> Did you test \special{dvipdfmx:config z 0} ?
> I don't know it works or not.

uncompressing completly naturally works, but it also makes the pdf
larger. So I'm looking for the "optimal" balance here.

In a small test I got this sizes:

compressed 12262 
z 5:       12417 
z 0:       22477


z 5 made the xmp readable, so it looks like a good compromize, but as 
I don't really know what exactly the different levels do, I'm not sure 
if it will work always and if it is really the best. 

Ulrike