Check_MK Werk 5468: Fixed indexing with disjunctions.

ID: 5468 Title: Fixed indexing with disjunctions. Component: Livestatus Level: 1 Class: Bug fix Version: 1.5.0i2 To speed things up, livestatus tries to use an index when accessing the 'hosts' and 'services' tables, but there was a bug when a disjunction ('Or:') was used in filters, leading to too few results. This has been fixed.