Trivial patch to fix the FTBFS with libsvn-dev 1.7. This is one of
those cases, as we see with major new g++ / libstdc++ releases, where
an include has been missing all along, just not previously noticed.
From: Peter Samuelson <email@example.com>
Subject: Include needed headers
Origin: other (trivial)
Explicitly include svn_client.h and svn_version.h, as we use
functionality from them. svn_version.h in particular used to be
included indirectly by other svn headers, but no longer is.