Zabbix

.......PS. [ZBX-18524] improved preprocessing diagnostic information to include oldest values in queue and totals to include done, queued, processing and pending

.......PS. [ZBX-18524] improved preprocessing diagnostic information to include oldest values in queue and totals to include done, queued, processing and pending

* commit 'f296132efa0634a0e351039d686a58c49a222257':
  .......PS. [ZBX-18524] updated function headers, replaced constant to define
  .D........ [ZBX-18524] added ChangeLog entry
  .......PS. [ZBX-18524] added ability to retrieve more detailed queue information
  .......PS. [ZBX-18524] added ability to retrieve oldest items with preprocessing in preprocessing manager queue
  .......PS. [ZBX-18524] added ability to retrieve oldest items with preprocessing in preprocessing manager queue
  .......PS. [ZBX-18524] added ability to retrieve oldest items with preprocessing in preprocessing manager queue
  .......PS. [ZBX-18524] moved item view retrieval to separate function

(cherry picked from commit 657dc5cea69e31c1367164dc35d838bedf5f3a4b)
(cherry picked from commit 7dab6979803ac5fcd23f24a3fdb746d3e6705288)
(cherry picked from commit 28ebf6fd3502203f0caff9d6bf3d00e31135d172)