Fix the expected test output after changes in [standard.mly].

test/bad/duplicate-formal.expected

 File "duplicate-formal.mly", line 6, characters 0-3:
-Error: several parameters of this rule are named "X25".
+Error: several parameters of this rule are named "X27".

test/bad/option.expected

 File "option.mly", line 6, characters 0-6:
-File "../../src/standard.mly", line 98, characters 8-14:
+File "../../src/standard.mly", line 112, characters 8-14:
 Error: the symbol option is defined with arities 0 and 1.

test/bad/unification-error-in-args.expected

 File "unification-error-in-args.mly", line 7, characters 6-7:
-Error: does the symbol "X25" expect 0 or 1 argument?
+Error: does the symbol "X27" expect 0 or 1 argument?

test/good/JSParse.opp.exp

@@ -1397,4 +1397,3 @@ assignment_operator:
 
 
 
-

test/good/K3Parser.opp.exp

@@ -1008,4 +1008,3 @@ check_expr:
 %%
 
 
-

test/good/albatross.opp.exp

@@ -1021,4 +1021,3 @@ exp_case:
 %%
 
 
-

test/good/alphaCaml-demos-interactive.opp.exp

@@ -31,4 +31,3 @@ declarations:
 %%
 
 
-

test/good/alphaCaml-demos-mixins.opp.exp

@@ -133,4 +133,3 @@ variables:
 %%
 
 
-

test/good/alphaCaml-demos-poplmark.opp.exp

@@ -163,4 +163,3 @@ NEPatFields:
 %%
 
 
-

test/good/alphaCaml.opp.exp

@@ -287,4 +287,3 @@ phrase:
 %%
 
 
-

test/good/alphaprolog.opp.exp

@@ -567,4 +567,3 @@ ty0s:
 %%
 
 
-

test/good/amalthea.opp.exp

@@ -132,4 +132,3 @@ atom:
 %%
 
 
-

test/good/anonymous-nested.opp.exp

@@ -124,4 +124,3 @@ in
 %%
 
 
-

test/good/anonymous-param-redundant.exp

@@ -4,18 +4,18 @@ Grammar has 9 productions.
 nullable(seplist(A)) = false
 nullable(phrase) = false
 nullable(other) = false
+nullable(midrule(__anonymous_1)) = false
 nullable(list(__anonymous_0(A,B))) = true
-nullable(embedded(__anonymous_1)) = false
 first(seplist(A)) = A
 first(phrase) = C
 first(other) = A
+first(midrule(__anonymous_1)) = D C
 first(list(__anonymous_0(A,B))) = B A
-first(embedded(__anonymous_1)) = D C
 follow(seplist(A)) = EOF
 follow(phrase) = #
 follow(other) = #
+follow(midrule(__anonymous_1)) = A
 follow(list(__anonymous_0(A,B))) = EOF D
-follow(embedded(__anonymous_1)) = A
 Built an LR(0) automaton with 20 states.
 The grammar is SLR(1).
 Built an LR(1) automaton with 20 states.

test/good/anonymous-param-redundant.mly

@@ -32,4 +32,4 @@ other:
    D and is NOT parameterized over X. *)
 seplist(X):
   X {}
-| X embedded(C {} | D {}) seplist(X) {}
+| X midrule(C {} | D {}) seplist(X) {}

test/good/anonymous-param-redundant.opp.exp

@@ -10,17 +10,17 @@
 %type <(int, int) either> phrase
 %%
 
-embedded___anonymous_1_:
+midrule___anonymous_1_:
   _10 = C
     {let x =
   let _1 = _10 in
-                 ()
+                ()
 in
     ( x )}
 | _10 = D
     {let x =
   let _1 = _10 in
-                        ()
+                       ()
 in
     ( x )}
 
@@ -61,10 +61,9 @@ other:
 seplist_A_:
   _1 = A
     {    ()}
-| _1 = A _2 = embedded___anonymous_1_ _3 = seplist_A_
-    {                                     ()}
+| _1 = A _2 = midrule___anonymous_1_ _3 = seplist_A_
+    {                                    ()}
 
 %%
 
 
-

test/good/anonymous-param.opp.exp

@@ -55,4 +55,3 @@ phrase:
 %%
 
 
-

test/good/anonymous.opp.exp

@@ -47,4 +47,3 @@ phrase:
 %%
 
 
-

test/good/atd_parser.opp.exp

@@ -277,4 +277,3 @@ field_name:
 %%
 
 
-

test/good/attapl-deptypes.opp.exp

@@ -257,4 +257,3 @@ TyBinder:
 %%
 
 
-