[tex-live] tex live 2009 pretests

[Daniel Becker]

Hallo -

could someone explain how this thing with epstopdf is implemented?  
What's the difference to the inclusion of

\usepackage{ifpdf}
\ifpdf
\usepackage{epstopdf}
\else
\fi

in the preamble of a LaTeX-Document? I'm asking because I might need  
to adjust http://tug.ctan.org/pkg/epspdfconversion (a modified package  
epstopdf that uses epspdf as the conversion script, not epstopdf).

Thanks -

Daniel