Use new cmdliner-based interface

Note this changes the syntax slightly: instead of '-daemon' we
should now use '--daemon'.

Signed-off-by: David Scott <dave.scott@citrix.com>
Create and install an xcp-networkd man page

Signed-off-by: David Scott <dave.scott@citrix.com>
Update .gitignore

Signed-off-by: David Scott <dave.scott@citrix.com>
Bump version to 0.9.5, update ChangeLog

Signed-off-by: David Scott <dave.scott@citrix.com>
Merge pull request #42 from djs55/cmdliner

Use cmdliner for command-line parsing and manpage generation