Include Global Search Operators

When setting up fields for the global search function in manager, it would be useful to be able to apply operators to those searches.  Right now it seems that all searches use the LIKE operator.  While this is great for certain searches, it also results in a large number of unwanted results.

For example I may want users to be able to query for addresses using 'LIKE' but for PID's or tax roll numbers I'd rather use '=' to limit the number of results returned.