Zabbix

.......PS. [DEV-2305] updated to latest master

Conflicts:
	src/libs/zbxdbwrap/proxy.c
	src/libs/zbxpreproc/pp_protocol.c
	src/zabbix_server/lld/lld.c
	src/zabbix_server/lld/lld_item.c
	src/zabbix_server/lld/lld_trigger.c
	src/zabbix_server/preprocessor/preproc_manager.c