Supported FileHandle API for Swift.

Author: millenomi

Foundation.xcodeproj/project.pbxproj

@@ -2889,7 +2889,7 @@
 				SWIFT_INSTALL_OBJC_HEADER = NO;
 				SWIFT_OBJC_INTERFACE_HEADER_NAME = "";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -2963,7 +2963,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_INSTALL_OBJC_HEADER = NO;
 				SWIFT_OBJC_INTERFACE_HEADER_NAME = "";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -3072,7 +3072,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				WRAPPER_EXTENSION = app;
 			};
 			name = Debug;
@@ -3097,7 +3097,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = org.swift.TestFoundation;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				WRAPPER_EXTENSION = app;
 			};
 			name = Release;