Initial -00 charter

  the original dhc WG charter, from IETF 13, Cocoa Beach FL, April 1989
  (formatting not preserved, it's copy-and-paste from a scanned PDF).
rename 00 to 01
charter-01 as downloaded from ietf.org
Charter -01 renamed to -02
Charter update to -02 (as downloaded from ietf.org)
charter renamed -02 to -03
charter -03 added (as downloaded from ietf.org)
charter renamed -03 to -04
charter -04 added (as downloaded from ietf.org)
charter renamed -04 to -05
charter -05 added (as downloaded from ietf.org)
charter renamed -05 to -06
charter -06 added (as downloaded from ietf.org)
charter renamed -06 to -07 (unpublished)
Proposed charter update (with comments)