8202056: Expand serial warning to check for bad overloads of serial-related methods and ineffectual fields

src/jdk.compiler/share/classes/com/sun/tools/javac/resources/javac.properties

@@ -240,8 +240,8 @@ javac.opt.Xlint.desc.requires-transitive-automatic=\
     Warn about automatic modules in requires transitive.
 
 javac.opt.Xlint.desc.serial=\
-    Warn about Serializable classes that do not provide a serial version ID. \n\
-\                         Also warn about access to non-public members from a serializable element.
+    Warn about Serializable classes that do not have a serialVersionUID field. \n\
+\                         Also warn about other suspect declarations in Serializable and Externalizable classes and interfaces.
 
 javac.opt.Xlint.desc.static=\
     Warn about accessing a static member using an instance.