Ordered List of changes to perform
in the 1.7 => 1.8 upgrade of groups:

1) Set groups->description to NULLable.
2) Rename the groups->password field to enrolmentkey
3) Change the groups->lang from 10cc to 30cc
4) Change the groups->hidepicture from int(2) to int(1)
5) Add one UNIQUE index on groups_members (groupid, userid)
6) Add the whole groups_groupings table (as is in 1.8.2+)
7) Add the whole groups_courses_groups table (as is in 1.8.2+)
8) Add the whole groups_courses_groupings table (as is in 1.8.2+)
9) Add the whole groups_groupings_groups table (as is in 1.8.2+)
10) Insert one record in log_display (module, action, mtable, field) VALUES ('group', 'view', 'groups', 'name') IF it doesn't exist.

11) PERFORM ALL THE NEEDED MOVEMENTS OF DATA

12) Drop the groups->courseid index
13) Drop the groups->courseid field