[developers] Add joining to a python pdf generator

["Mohamed Magdy" <mohamed dot m dot k at gmail dot com>]

Salam,

5 months ago, I reported a bug ( http://code.pediapress.com/wiki/ticket/288 ) in the software that will probably enable "Save as PDF" feature on Wikipedia, the problem is that the text (Arabic) in the resulting PDF isn't joined. the bug is in mwlib.rl ( http://code.pediapress.com/wiki/wiki/mwlibrl , http://pypi.python.org/pypi/mwlib.rl ). See example of the PDF: http://test.wikipedia.org/wiki/User:Alnokta , direct: http://test.wikipedia.org/w/index.php?title=Special:Collection/render_article/&arttitle=User:Alnokta&writer=rl

It is also used on OO.org wiki http://wiki.services.openoffice.org/wiki/%D8%B5%D9%81%D8%AD%D8%A9_%D8%B1%D8%A6%D9%8A%D8%B3%D9%8A%D8%A9

If someone could take a look and may be fix it, it would be great!

Another ancient bug: http://code.pediapress.com/wiki/ticket/187