added tests for semicolon parsing

Author: dduan

test/Parse/semicolon.swift

@@ -0,0 +1,63 @@
+// RUN: %target-parse-verify-swift
+
+let a = 42;
+var b = "b";
+
+struct A {
+    var a1: Int;
+    let a2: Int ;
+    var a3: Int;let a4: Int
+    var a5: Int; let a6: Int;
+};
+
+enum B {
+    case B1;
+    case B2(value: Int);
+    case B3
+    case B4; case B5 ; case B6;
+};
+
+class C {
+    var x: Int;
+    let y = 3.14159;
+    init(x: Int) { self.x = x; }
+};
+
+typealias C1 = C;
+
+protocol D {
+    var foo: () -> Int { get };
+}
+
+struct D1: D {
+    let foo = { return 42; };
+}
+func e() -> Bool {
+    return false;
+}
+
+import Swift;
+
+for i in 1..<1000 {
+    if i % 2 == 1 {
+        break;
+    };
+}
+
+let six = (1..<3).reduce(0, combine: +);
+
+func lessThanTwo(input: UInt) -> Bool {
+    switch input {
+    case 0:     return true;
+    case 1, 2:  return true;
+    default:
+        return false;
+    }
+}
+
+enum StarWars {
+    enum Quality { case 😀; case 🙂; case 😐; case 😏; case 😞 };
+    case Ep4; case Ep5; case Ep6
+    case Ep1, Ep2; case Ep3;
+};
+