Fix building translations on pristine systems

Review Request #5300 — Created Jan. 22, 2014 and submitted — Latest diff uploaded

Information

Djblets
master

Reviewers

Fix building translations on pristine systems

If we are attempting to build on a system without an
existing copy of Djblets installed in a reachable
location (such as distribution packaging), we need to
ensure that the source directory is in the PYTHONPATH
or the import of djblets.util.filesystem will fail.

With this patch, I was successfully able to build Djblets for Fedora.