Zabbix

A...I...S. [ZBX-21898] added escaping of backslashes in history function string parameters

* commit 'f37b6a7b9adf276f04ba7f196a03e8a9924445b5': (72 commits)
  ........S. [ZBX-21898] fixed jenkins build warning
  ........S. [ZBX-21898] fixed compilation warnings
  ........S. [ZBX-21898] removed unnecessary check
  ........S. [ZBX-21898] forgot to remove unnecessary break
  ........S. [ZBX-21898] fixed more issues in expression macro upgrade
  .......... [ZBX-21898] fixed warnings
  ........S. [ZBX-21898] fixed oversigts in new expression macro database upgrade
  ........S. [ZBX-21898] forgot to add db patches to the list
  ........S. [ZBX-21898] redone the database patch for expression macros
  ........S. [ZBX-21898] changed the parsing of expression macros during database upgrade
  .......... [ZBX-21898] fixed typos and formatting
  A......... [ZBX-21898] fixed converting expression macros in event names and media types
  ........S. [ZBX-21898] fixed database patch producing update statements that do not change anything
  ........S. [ZBX-21898] fixed database patch issues and parsing of expression macro and trigger functions, added missing patches
  A......... [ZBX-21898] removed extra line
  A......... [ZBX-21898] made parsing to be called only if substring starts with "{?"
  .......... [ZBX-21898] removed trailing commas
  A......... [ZBX-21898] fixed trigger expressions, recovery expressions, and calculated item formulas not being converted if contain user or LLD macros; fixed expression macros not being converted if mixed with text or used in macro functions
  A......... [ZBX-21898] simplified rules for media type parameters conversion
  A......... [ZBX-21898] improved code readability by moving map selements and map links conversion to separate methods
  ...