[tex-live] pretest: epstopdf overwrites existing files

[Karl Berry]

    Unless foo.eps is given explicitly (i.e. with extension) in which case
    foo.SUFFIX.pdf should be generated and used even if foo.pdf exists

Why?   Even though the user is clearly confused in this case (.eps in
doc, running pdflatex), it still seems to me that if they have a
foo.pdf, it is probably the "equivalent" of foo.eps and is what the user
would expect to be used.

(Heiko, is it even possible to do different things in the
explicit-extension and no-explicit-extension cases?  I think you said it
was, but ...)