new version of index page generation

Available from [1]. It has many new features:
The possibility of having the index page linking to individual HTML page
with a navigation menu (see [2]) and a link to the raw image.
It can also dump EXIF information in those pages (3).
Also the extra note with link to Hugo's page can now be added using a
cmdline option.
The title reuse the picture serie title, along with the title taken from
the metadata. [4]
genepage -h may be useful :)

[1] http://www.raubacapeu.net/people/yves/2001/02/tools
[2] http://www.raubacapeu.net/people/yves/pictures/2001/06/05/frehel.html
[3] http://www.raubacapeu.net/people/yves/pictures/2001/06/05/frehel-exif-dsc20010605003.html
[4] http://www.raubacapeu.net/people/yves/pictures/2001/01/27/cimiez