[master] Update ChangeLog for #2490.

ChangeLog

@@ -1,3 +1,11 @@
+510.	[func]		marcin
+	DHCP option instances can be created using a collection of strings.
+	Each string represents a value of a particular data field within
+	an option. The data field values, given as strings, are validated
+	against the actual types of option fields specified in the options
+	definitions.
+	(Trac #2490, git 56cfd6612fcaeae9acec4a94e1e5f1a88142c44d)
+
 509.	[func]		muks
 	Log messages now include the pid of the process that logged the
 	message.