uninstall_postgis.sql doesn't remove operator family

[nicklas]

The operator families is not removed with uninstall_postgis.sql

It seems to work by just droping the families instead of the classes with cascade then all of it seems to be droped so the suggestion is to change:

DROP OPERATOR CLASS gist_geometry_ops USING gist CASCADE; DROP OPERATOR CLASS gist_geometry_ops USING gist CASCADE; to DROP OPERATOR FAMILY gist_geometry_ops USING gist CASCADE; DROP OPERATOR FAMILY gist_geometry_ops USING gist CASCADE;

and

DROP OPERATOR CLASS gist_geography_ops USING gist CASCADE; DROP OPERATOR CLASS btree_geography_ops USING btree CASCADE; to DROP OPERATOR FAMILY gist_geography_ops USING gist CASCADE; DROP OPERATOR FAMILY btree_geography_ops USING btree CASCADE;

or is that risky in any way. Should we drop both the classes and the families instead?

I guess it is the same thing with trunk and 1.4.x branch

[strk]

Confirmed by new uninstall regression tester and fixed with r8510