#2 rotate and flip output jpeg images

[Johannes la Poutre]

The attached patch was created to fix output of a PDF
where all images (jpegs) appeared rotated and mirrored.

It is nothing intelligent, just calls the convert
program from ImageMagick for alle jpegs in the output
directory.

I don't know how common this mirroring behaviour is,
just stumbled accross it and haekd this thing together.

Just use it if you think it's worth the effort!

[Johannes la Poutre]

diff -u for pdftohtml