Option to set the default

Here's a patch that extends privacy_settings() with an extra per-content-type set of checkboxes allowing for a default value to be assigned, and extends privacy_is_private() to check for the default value.

This patch sponsored by Bluespark Labs.

Updated patch that fixes a small oversight (use of "$type" instead of "$node->type") and fixes handling for node/add/* pages.

I overlooked a logic error that meant that when the default was set to ON there was no way to uncheck the box, it would always set the value to Private. I was about to upload a new patch with this included but then realized the hook_nodeapi() code also had to change. I'll be right back with a new patch..

Updated patch, adds a new column to track the specific value of each node field, updates hook_nodeapi() and privacy_is_private() to support the new field, along with an update script (6101) to handle it all.