Add missing tests for B.3.3.4 and B.3.3.5 (#2050)

test/annexB/language/function-code/function-redeclaration-block.js

+// Copyright (C) 2019 Adrian Heine. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: In non-strict mode, duplicate LexicallyDeclaredNames in a block are allowed if they are bound by FunctionDeclarations
+esid: sec-block-duplicates-allowed-static-semantics
+es6id: B.3.3.4
+flags: [noStrict]
+info: |
+    B.3.3.4 Changes to Block Static Semantics: Early Errors
+
+    For web browser compatibility, that rule is modified with the addition of the **highlighted** text:
+
+    Block: {StatementList}
+
+    It is a Syntax Error if the LexicallyDeclaredNames of StatementList contains any duplicate entries, **unless the source code matching this production is not strict mode code and the duplicate entries are only bound by FunctionDeclarations**.
+---*/
+
+{ function a() {} function a() {} }

test/annexB/language/function-code/function-redeclaration-switch.js

+// Copyright (C) 2019 Adrian Heine. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: In non-strict mode, duplicate LexicallyDeclaredNames in a switch statement's CaseBlock are allowed if they are bound by FunctionDeclarations
+esid: sec-switch-duplicates-allowed-static-semantics
+es6id: B.3.3.5
+flags: [noStrict]
+info: |
+    B.3.3.4 Changes to Block Static Semantics: Early Errors
+
+    For web browser compatibility, that rule is modified with the addition of the **highlighted** text:
+
+    Block: {StatementList}
+
+    It is a Syntax Error if the LexicallyDeclaredNames of StatementList contains any duplicate entries, **unless the source code matching this production is not strict mode code and the duplicate entries are only bound by FunctionDeclarations**.
+
+
+    B.3.3.5 Changes to switch Statement Static Semantics: Early Errors
+
+    For web browser compatibility, that rule is modified with the addition of the **highlighted** text:
+
+    SwitchStatement: switch ( Expression ) CaseBlock
+
+    It is a Syntax Error if the LexicallyDeclaredNames of CaseBlock contains any duplicate entries, **unless the source code matching this production is not strict mode code and the duplicate entries are only bound by FunctionDeclarations**.
+---*/
+
+let x
+switch (x) {
+case 1:
+  function a() {}
+case 2:
+  function a() {}
+}