Includes a small fixup by Ramsey:
Improves integer type compatibility on different platforms.
svndump.c:
- replace %lu by PRIuMAX in printf format string.
- cast lhs of cast operator to uintmax_t
[RFC v2 1/4] svndump: move struct definitions to .h
[RFC v2 2/4] vcs-svn/svndump: restructure node_ctx, rev_ctx handling
[RFC v2 3/4] vcs-svn/svndump: rewrite handle_node(),
[RFC v2 4/4] vcs-svn: remove repo_tree