* Merge from debian testing (LP: #600914), remaining changes: - Create pot file on build. - Build a python-subversion-dbg package. - (Build-)depend on default-jre-headless/-jdk. - Do not apply java-build patch. - debian/rules: Manually create the doxygen output directory, otherwise we get weird build failures when running parallel builds. - Disable the serf backend because serf is in universe. - Amend the XS-Python-Version line to ">= 2.4" rather than explicit versions.