Updated .expected files for epsilon-cycle and no-tokens.

bench/bad/epsilon-cycle.expected

-%start a
-
-%type <unit> a
-%%
-
-a:
-| b
-    { () }
-
-b:
-| a
-    { () }
-
-%%
-
-
-
+File "epsilon-cycle.mly", line 8, characters 2-4:
+File "epsilon-cycle.mly", line 11, characters 2-4:
+Error: the grammar is ambiguous.
+The following items participate in an epsilon-cycle:
+a -> . b 
+b -> . a 

bench/bad/no-tokens.expected

-%start s
-
-%type <unit> s
-%%
-
-s:
-| s
-    {}
-
-%%
-
-
-
+Error: no tokens have been declared.