[tex-live] pretest: epstopdf overwrites existing files

[Karl Berry]

Hi Heiko,

      \epstopdfsetup{suffix=-gen}

It worked for me.  Thanks so much.  Can you upload it to CTAN when you
have a chance, barring further reports?  Thanks also for the doc updates.

In the TL graphics.cfg that I just committed, I used suffix=-epstopdf.
That's annoyingly long, but seemed more explicit than -gen, which I
could easily see people wondering about -- e.g., thinking generic or
general instead of the intended "generated".

karl