Support for Swift language and Clang modules for ninja generator.

test/mac/swift/MySwiftTest.swift

Index: test/mac/swift/MySwiftTest.swift
diff --git a/test/mac/swift/MySwiftTest.swift b/test/mac/swift/MySwiftTest.swift
new file mode 100644
index 0000000000000000000000000000000000000000..1367037efa5df5ba7a3eea11feafa5737b49b362
--- /dev/null
+++ b/test/mac/swift/MySwiftTest.swift
@@ -0,0 +1,13 @@
+import swift_mac
+import XCTest
+
+class MySwiftTest : XCTestCase {
+  func testSwift() {
+    var obj = MySwiftClass()
+    XCTAssert(obj.intField == 0);
+  }
+  func testObjc() {
+    var obj = MyObjcClass()
+    XCTAssert(obj.intField == 0);
+  }
+}