libutil: Add a stacked, recursive directory tree iterator

The concept is simple: Use the existing, platform dependent iterator
to walk a directory. If a directory entry is encountered, recurse into
it using the open_subdir handler, reconstruct the full path for any
entries discovered using the directory stack.

An additional function is added to skip a sub-hierarchy.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 0 deletions

diff --git a/lib/util/test/testdir/dirb/dirx/file_x2 b/lib/util/test/testdir/dirb/dirx/file_x2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/util/test/testdir/dirb/dirx/file_x2