Zabbix

...G...PS. [ZBX-10550] added warnings when Zabbix components have different versions

* commit '947047935f2d93846d30ec6a0bc115bc1dec8cab':
  ...G...PS. [ZBX-10550] fixed multiline if statement must be enclosed in braces
  ...G...PS. [ZBX-10550] warning message throttling is done only if the versions are different
  ...G...PS. [ZBX-10550] throttling of incompatibility warnings
  ...G...PS. [ZBX-10550] move warning log inside the function
  ...G...PS. [ZBX-10550] check protocol version for additional requests from old proxies
  ........S. [ZBX-10550] tweaked proxy version incompatibility warning messages
  ...G...PS. [ZBX-10550] remove condition for 4.2
  ...G...PS. [ZBX-10550] updated compatibility rules and functionality duplicated for passive proxy
  ...G...PS. [ZBX-10550] do not accept data from proxy with different version
  .......... [ZBX-10550] created new development branch