Use local object inventory files for sphinx Use the local object inventory files to prevent sphinx-build from downloading them during build. This patch makes the intersphinx mappings depend on the existence of these files, thus passing Debian Policy 12.3 while still maintaining a level of comfort for the reader of the documentation. Based on Fladischer Michael <FladischerMichael@fladi.at> patch for sphinx-issuetracker
Simplified to use plain paths to the packaged docs, not remote resources by crusoe
