[tex-live] PDF 1.5 by default in TL 2010

[Leo]

On 2010-01-11 01:09 +0000, Karl Berry wrote:
> For TL 2010, we would like to change the default PDF output version to
> PDF 1.5 (proposed by Elie Roux). This is so we can use
> \pdfcompresslevel and generate noticeably smaller PDF's by default.

Any idea how to set the pdf version to 1.5 in tl2009? I want to
experiment this change a bit.

Thanks.

Leo

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