lib/sh/sync.sh: upload(): use --exclude filters from per-dir .rsync_ignore. note that --exclude-from can't be used for this, because it is relative to the currdir, not the rsync root, and therefore also requires the .rsync_ignore to exist rather than using it only if it exists.
lib/sh/sync.sh: upload(): use --exclude filters from per-dir .rsync_ignore. note that --exclude-from can't be used for this, because it is relative to the currdir, not the rsync root, and therefore also requires the .rsync_ignore to exist rather than using it only if it exists.