I have now merged the three separate trunks into one.
If you have an existing checkout of FontBox, JempBox, and/or PDFBox, then I recommend doing a new checkout of https://svn.apache.org/repos/asf/pdfbox/trunk and manually migrating any pending local changes you may have to the new checkout.
If you're only interested in FontBox or JempBox, you can also just switch your existing checkouts to the new svn location with the following commands:
svn switch https://svn.apache.org/repos/asf/pdfbox/trunk/jempbox (in a JempBox trunk checkout)
svn switch https://svn.apache.org/repos/asf/pdfbox/trunk/fontbox (in a FontBox trunk checkout)