This reverts commit 047f00a411. It turns out that BoundedRecursion is the wrong thing to measure.
047f00a411
This indicates that the filter set could be satisfied by a bounded directory recursion.
The --ignore-case flag causes the filtering of file names to be case insensitive. The flag name comes from GNU tar.
The purpose of this is to make it easier to maintain and eventually to allow the rclone backends to be re-used in other projects without having to use the rclone configuration system. The new code layout is documented in CONTRIBUTING.
