Compusure Drupal development

Bit of a placeholder for now.
This does not do real openid login authentication, but uses openid as an identifier to return authentication session id.
To secure this, use SSL for sites that call this service or run the service, and enable API keys.

Allows search results from multiple drupal sites to be aggregated under the 'distributed search' tab.
Setup on the search server/homesite
* enable the search, distributed_search modules.
* add search client sites and API key (obtained from the search client site).
Setup on the search client
* enable the search, services, xmlrpc-server, search-services modules.
* create an api key for the search server

The shared email module overrides the 'user' module's validation that prevents the same email address being used by more than one user. Works for both registration and account updates. Displays a warning to the user that they are using a shared email.
Based on http://drupal.org/node/15578#comment-249157
All this module does is modify the email address before it is validated by the user module.
Because it only changes the edit value rather than the form value, the validation will pass but the original unchanged email is still stored properly.