Print O, L, U instead of 0, 1, V in Crockford encoding.

This allows use to generate customized meaningfull addresses.


git-svn-id: https://gnunet.org/svn/gnunet@33884 140774ce-b5e7-0310-ab8b-a85725594a96
Print `I' instead of `L'.


git-svn-id: https://gnunet.org/svn/gnunet@33885 140774ce-b5e7-0310-ab8b-a85725594a96
initial sensor reporting component code


git-svn-id: https://gnunet.org/svn/gnunet@33886 140774ce-b5e7-0310-ab8b-a85725594a96