display additional comments(enum value) in generated sources

Author: ibre5041

tool/src/main/resources/org/antlr/codegen/templates/Cpp/Cpp.stg

@@ -762,7 +762,7 @@ ANTLR_UINT8* <name>TokenNames[<length(tokenNames)>+4]
         (ANTLR_UINT8*) "\<EOR>",
         (ANTLR_UINT8*) "\<DOWN>",
         (ANTLR_UINT8*) "\<UP>",
-        <tokenNames:{it |(ANTLR_UINT8*) <it>}; separator=",\n">
+        <rest(tokens):{it |(ANTLR_UINT8*) "<it.name>", //<it.type>}; separator="\n">
        };
 <endif>