Zabbix

........S. [ZBX-19440] added utf-8 support to zbx_set_json_strerror

* commit '29f06c46f71868fc61ea0b5b84823c39def4e770':
  ........S. [ZBX-19440] added changelog
  ........S. [ZBX-19440] fixed trim
  ........S. [ZBX-19440] reworked code
  ........S. [ZBX-19440] fixed problems with utf-8 in zbx_set_json_strerror
  ........S. [ZBX-19440] reverted - fixed trying to save non-UTF8 symbols to item_rtdata.error
  ........S. [ZBX-19440] fixed trying to save non-UTF8 symbols to item_rtdata.error

(cherry picked from commit b11ccd8feb27d34a67864c6d692ed4b144ef9753)