[generation] Parse and render new error format

Extend the test generation tool to emit the recently-modified format of
the "negative" meta-data. Update the effected test case files
accordingly.

src/dflt-params/duplicates.case

@@ -5,7 +5,9 @@ desc: >
   It is a Syntax Error if BoundNames of FormalParameters contains any duplicate
   elements.
 template: syntax
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 info: |
   14.1.2 Static Semantics: Early Errors
 

src/dflt-params/rest.case

@@ -20,7 +20,9 @@ info: |
 
     ...BindingIdentifier[?Yield]
     ...BindingPattern[?Yield]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- params

src/dstr-assignment/array-elem-init-simple-strict.case

@@ -10,7 +10,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.1
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-elem-init-yield-ident-invalid.case

@@ -8,7 +8,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.4
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-elem-nested-array-invalid.case

@@ -9,7 +9,9 @@ desc: >
     AssignmentPattern as the goal symbol.
 template: syntax
 es6id: 12.14.5.1
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-elem-nested-array-yield-ident-invalid.case

@@ -9,7 +9,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.3
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-elem-nested-obj-invalid.case

@@ -9,7 +9,9 @@ desc: >
     AssignmentPattern as the goal symbol.
 template: syntax
 es6id: 12.14.5.1
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-elem-nested-obj-yield-ident-invalid.case

@@ -9,7 +9,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.3
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-elem-target-simple-strict.case

@@ -10,7 +10,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.1
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-elem-target-yield-invalid.case

@@ -9,7 +9,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.4
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-before-element.case

@@ -7,7 +7,9 @@ desc: >
     AssignmentElementList.
 template: syntax
 es6id: 12.14.5
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-before-elision.case

@@ -7,7 +7,9 @@ desc: >
     AssignmentElementList.
 template: syntax
 es6id: 12.14.5
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-before-rest.case

@@ -7,7 +7,9 @@ desc: >
     AssignmentElementList.
 template: syntax
 es6id: 12.14.5
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-elision-invalid.case

@@ -7,7 +7,9 @@ desc: >
     AssignmentRestElement in a AssignmentElementList.
 template: syntax
 es6id: 12.14.5
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-init.case

@@ -6,7 +6,9 @@ desc: >
     The AssignmentRestElement does not support an initializer.
 template: syntax
 es6id: 12.14.5
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- setup

src/dstr-assignment/array-rest-nested-array-invalid.case

@@ -9,7 +9,9 @@ desc: >
     AssignmentPattern as the goal symbol.
 template: syntax
 es6id: 12.14.5.1
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-nested-array-yield-ident-invalid.case

@@ -9,7 +9,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.3
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-nested-obj-invalid.case

@@ -9,7 +9,9 @@ desc: >
     AssignmentPattern as the goal symbol.
 template: syntax
 es6id: 12.14.5.1
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-nested-obj-yield-ident-invalid.case

@@ -9,7 +9,9 @@ desc: >
 template: syntax
 es6id: 12.14.5.3
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- elems

src/dstr-assignment/array-rest-yield-ident-invalid.case

@@ -9,7 +9,9 @@ desc: >
 template: syntax
 es6id: 12.14.5
 flags: [onlyStrict]
-negative: SyntaxError
+negative:
+  phase: early
+  type: SyntaxError
 ---*/
 
 //- setup