Drupal Access Control - Giving Access to Profiles and Online Contribution Pages also forces display of CiviCRM link in Drupal Navigation Menu

Site administrators need to be able to give anonymous users (and other roles) permission for:
-CiviCRM Profile Listings

• make online contributions
  WITHOUT causing the CiviCRM module menu link to appear in the main Drupal navigation menu.

This is problematic - since the CiviCRM menu link accesses our basic search page which is a dead-end (no contacts will be returned by searches for anonymous users/roles w/ this set of permissions).

Currently, In Drupal's administer >> access control screen - if you uncheck 'access CiviCRM' for a role - but leave 'Profile Listings' and/or 'make contributions' checked - and click Save... then 'access CiviCRM' is RE-CHECKED automatically by the forms post-process. Therefore the 'dead-end' CiviCRM menu appears for that role.

Pls see if we can modify our code to achieve on of the following:

• If the only available permissions for a logged in role are access CiviCRM, access Profile Listings, make contributions - then suppress the CiviCRM module menu link in Drupal's user navigation menu.

OR

• Prevent access control form submit from re-checking 'access CiviCRM' (I'm assuming this will cause our module menu link to disappear).

NOTE: I've looked through civicrm.module to see if I can determine what is 'special' about the 'access CiviCRM' permission - and don't find any clues except possibly the code in hook_block?? OR... Possibly the fact that this is the permission for the module's root path (civicrm) is what's causing drupal to do this.