Werk #11744: support case-insensitive hostname matching for multiple host match types

Hosts are matched to events in the Event Console using different specification methods: hostname, IP address, and host alias. In the event that multiple specification methods are used to query events, livestatus queries did not return events for hosts if the letter casing was inconsistent. This was caused by two mechanisms:

• Preliminary filters that determine whether livestatus queries need to be performed
• Host matching criteria that returned negative results

This defect becomes evident when the check_mkevents Active Check is used to monitor events, and multiple items in the "Match the hosts with" option are selected ("Check event state in Event Console" ruleset). In this case, the check will return fewer events than are expected.

The livestatus query now supports case-insensitive host/event matching. Please be advised that this fix may result in larger volumes of matched events.

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