New patch for 6.x-1.x-dev version, several bugfixes

Basically, I feel like this module should not be completely abandoned while there is no available migration path to Comment Driven, especially considering the number of sites reporting Comment CCK usage being twice as much as that of Comment Driven.

It fixes a broken code in comment update section (which was degraded since 6.x-1.0-beta2 version), leading to failure to update CCK fields,
and adds a new permission setting to prevent users from changing CCK fields when editing comments #719368: When editing a comment, comment CCK field should be disabled