misc small maintenance

Jing Luo (3):
      d/upstream/metadata: change github url protocol from git to https
      d/copyright: remove old FSF address
      d/copyright: move "On Debian systems..." to comment stanza

 debian/copyright         | 56 +++++++++++++++++++++-----------------------------------
 debian/upstream/metadata |  2 +-
 2 files changed, 22 insertions(+), 36 deletions(-)