SVN loader: Add efficient incremental loader based on partial dumps
This diff adds a new loader class SWHSvnLoaderFromRemoteDump enabling to load svn repositories in an incremental and efficient way.
This is a first draft in order to share the idea and the results.
The loader is based on the creation of dump files generated with the rsvndump tool. It is not packaged in Debian so you must get it from http://rsvndump.sourceforge.net/ first, then compile and install it.
Related #1161 (closed)
Test Plan
To do, compare the loading of a sample svn repository in one pass with the loading of the same repository in multiple passes.
Migrated from D433 (view on Phabricator)