Ignoring Qt 5.13 deprecated warnings

In Qt 5.13 deprecated warnings became too obtrusive.
It is not enough anymore to not define QT_DEPRECATED_WARNINGS to avoid them.
From now on it is necessary to define QT_NO_DEPRECATED_WARNINGS.

cmake/kumir2/kumir2_apple.cmake

@@ -23,7 +23,7 @@ set(KUMIR2_SDK_SCRIPTS_DIR "${KUMIR2_RESOURCES_DIR}/devel")
 set(KUMIR2_SDK_CMAKE_DIR "${KUMIR2_RESOURCES_DIR}/devel/cmake")
 
 # Compile flags
-set(KUMIR2_CXXFLAGS "-fno-exceptions -std=c++0x -fPIC -DAPPLE -Wno-inconsistent-missing-override")
+set(KUMIR2_CXXFLAGS "-fno-exceptions -std=c++0x -fPIC -DAPPLE -Wno-inconsistent-missing-override -DQT_NO_DEPRECATED_WARNINGS")
 set(KUMIR2_CXXFLAGS_Release "-O2 -DNDEBUG -DQT_NO_DEBUG")
 set(KUMIR2_CXXFLAGS_Debug "-g -O0 -Werror -Wreorder -Wreturn-type -Wno-error=unused-variable -Wno-error=unused-parameter")