Use new DEPRECTATION message type.
GenerateExportHeader: Port to use message(DEPRECATION)
Merge topic 'deprecation-message' into next

2ee00ed GenerateExportHeader: Port to use message(DEPRECATION)
415f9fc Use new DEPRECTATION message type.
Qt4Macros: Port to use message(DEPRECATION)
GenerateExportHeader: Port to use message(DEPRECATION)
Merge topic 'deprecation-message' into next

f973737 GenerateExportHeader: Port to use message(DEPRECATION)
f69606d Qt4Macros: Port to use message(DEPRECATION)