[pdftex] pdftex-pdfcrypt update

[Han The Thanh]

> My intention was
> (a) solve major bugs reported in the next days using linux binaries
> (b) clean up + document code
> (c) release code as a patch relative to the current regular sources
> (d) incorporate it to the regular sources if Han The Thanh agrees.
> 
> I have not yet discussed with Han if he would like to incorporate the
> changes into the regular version, but as he has welcomed the enhancement, 
> I may assume that he would, and I would be happy to see it there.

I would be happy to incorporate the changes into pdftex sources. Or even
better, can you please discuss it with Sebastian so you can submit the
patch to the texlive p4 server (I do keep my sources in synchronization
with this server).

Best regards,
Thanh