GitLab

Put myself as Maintainer and use 'arturo@debian.org' as address while at it.
Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org>

Add this manpage. It has been already sent upstream.
Link compat tools manpages to this new manpage.
Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>