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The edit also included a reorganisation of the sections.

This merge adds the basic code for handling lease file cleanup (LFC).
It provides the basic framework for the process as well as code to
do argument parsing.

Add comments to the test code

Modify the getopt code to explicitly handle unknown arguments and
missing option arguments.

- Fixed identation in configure.ac
- Added kea-lfc to Doxygen
- Corrected some little typos in the kea-lfc man page
- Removed unnecessary headers and libraries
- lfc.h updated - one comment, one method made const
- added anonymous namespace for lfc_controller_unittests.cc

Cleanup spaces and such to meet coding specs

Remove testing artifacts

Update man page documenation