CLI nested keyword search

The patch below adds nested keyword search support for the command
line.

Previously, it didn’t work because LoadByNameAndParentId does not deal
with paths, only with atomic names (which do not contain delimiters).

Florian Weimer Weimer@CERT.Uni-Stuttgart.DE
University of Stuttgart http://CERT.Uni-Stuttgart.DE/people/fw/
RUS-CERT +49-711-685-5973/fax +49-711-685-5898