build: install man pages

Now that we have some man-pages, let them be installed via normal
``make install'' call.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
man: add mausezahn man-page

Add the mausezahn man-page that is modified on top of the original
man-page by Herbert Haas.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>