OAK-3574: Query engine: support p=lowercase('x') and other function-based indexes
OAK-3574: Query engine: support p=lowercase('x') and other function-based indexes

git-svn-id: 67138be12999c61558c3dd34328380c8e4523e73@1853119 13f79535-47bb-0310-9956-ffa450edef68

anchela/jackrabbit-oak,alexparvulescu/jackrabbit-oak,anchela/jackrabbit-oak,anchela/jackrabbit-oak,stillalex/jackrabbit-oak,alexparvulescu/jackrabbit-oak,alexparvulescu/jackrabbit-oak,stillalex/jackrabbit-oak,anchela/jackrabbit-oak,alexparvulescu/jackrabbit-oak,stillalex/jackrabbit-oak,alexparvulescu/jackrabbit-oak,stillalex/jackrabbit-oak,stillalex/jackrabbit-oak,anchela/jackrabbit-oak