Remove ES_NEXT macro (#4915)

- remove all '#JERRY_ESNEXT' macro
- remove 5.1 build profile, update test runner accordingly (Note: all builtins are turn on by default)
- move tests from tests/jerry/esnext into tests/jerry, concatenate files with same names
- add skiplist to some snapshot tests that were supported only in 5.1
- fix doxygen issues that were hidden before (bc. of es.next macro)

Co-authored-by: Martin Negyokru negyokru@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu

tests/jerry/symbol-unscopables.js

@@ -0,0 +1,127 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var obj = {
+    prop1: 42,
+    prop2: 13,
+    prop3: "foo",
+    prop4: 1
+};
+
+var obj2 = {
+    foo: "foo"
+};
+
+obj[Symbol.unscopables] = {
+    prop1: false,
+    prop2: true,
+    prop3: undefined,
+    prop4: obj2
+};
+
+with (obj)
+{
+    assert(prop1 === 42);
+
+    try {
+      prop2;
+      assert(false);
+    } catch (e) {
+      assert(e instanceof ReferenceError);
+    }
+
+    assert (prop3 === "foo");
+
+    try {
+      prop4;
+      assert(false);
+    } catch (e) {
+      assert(e instanceof ReferenceError);
+    }
+
+    try {
+      prop5;
+      assert(false);
+    } catch (e) {
+      assert(e instanceof ReferenceError);
+    }
+}
+
+var obj2 = {};
+Object.defineProperty(obj2, Symbol.unscopables, { get: function () { throw 42; } });
+
+with (obj2) {
+  try {
+    prop;
+    assert(false);
+  } catch (e) {
+    assert(e instanceof ReferenceError);
+  }
+}
+
+var obj3 = { foo: 12 };
+Object.defineProperty(obj3, Symbol.unscopables, { get: function () { throw 42; } });
+
+with (obj3) {
+  try {
+    typeof foo;
+  } catch (e) {
+    assert(e === 42);
+  }
+}
+
+var symbol_obj = Array.prototype[Symbol.unscopables];
+assert(symbol_obj.copyWithin === true);
+assert(symbol_obj.entries === true);
+assert(symbol_obj.fill === true);
+assert(symbol_obj.find === true);
+assert(symbol_obj.findIndex === true);
+assert(symbol_obj.keys === true);
+assert(symbol_obj.values === true);
+
+assert(Object.getPrototypeOf(Array.prototype[Symbol.unscopables]) === null);
+
+var obj3 = Object.getOwnPropertyDescriptor(Array.prototype[Symbol.unscopables], "find");
+assert(obj3.value === true);
+assert(obj3.writable === true);
+assert(obj3.enumerable == true);
+assert(obj3.configurable == true);
+
+var a = { foo: 1, bar: 2 };
+a[Symbol.unscopables] = { bar: true };
+with (a) {
+  assert(foo === 1);
+  assert(typeof bar === "undefined");
+}
+
+let track = [];
+let proxy = new Proxy({ a : 4, [Symbol.unscopables] : [] }, {
+  has (t, p) {
+    track.push(p);
+    return Reflect.has(...arguments);
+  },
+  get (t, p, r) {
+    track.push(p);
+    return Reflect.get(...arguments);
+  }
+});
+
+with (proxy){
+  a;
+}
+
+assert(track.length == 3);
+assert(track[0] === 'a');
+assert(track[1] === Symbol.unscopables);
+assert(track[2] === 'a');