log probe numbers
Just to check ...
Revert "Just to check ..."

This reverts commit 2e9141832b7a04f011f9f62a8f58bd7ac38827a6.
Organize example directory.
Try to compute pdr by taking average over PROBE_NUM_THRESHOLD.
test
test
test
BUg in Git
Test
GIT has a problem with rpl-dag.org.c. So, I changed the name and I
create a new file on that.

This file's basis is rpl-dag.org.c
I do not remember the commits.