Merge branch '7.4' into 8.0

* 7.4:
  [Serializer] Add CDATA_WRAPPING_NAME_PATTERN support to XmlEncoder

Author: OskarStark

serializer/encoders.rst

@@ -198,6 +198,10 @@ These are the options available on the :ref:`serializer context <serializer-cont
 ``cdata_wrapping_pattern`` (default: ``/[<>&]/``)
     A regular expression pattern to determine if a value should be wrapped
     in a CDATA section.
+``cdata_wrapping_name_pattern`` (default: ``false``)
+    A regular expression pattern that defines the names of fields whose values
+    should always be wrapped in a CDATA section, even if their contents don't
+    require it. Example: ``'/(firstname|lastname)/'``
 ``ignore_empty_attributes`` (default: ``false``)
     If set to true, ignores all attributes with empty values in the generated XML