Tests: Update tests importing AppKit from the SDK to use a local cache

Tests importing AppKit have a tendency to be flaky when they share a
module cache with other builds using a different set of framework search
flags. Make sure they use a local cache, otherwise the compiler can
reuse incompatible cached modules.

Alternatively, we could align all builds using the same cache to have
exactly the same framework search paths or enable explicit module
builds. I picked the module cache as it's the most reliable solution in
the short and long term.

rdar://142949965

Author: xymus

test/ClangImporter/SceneKit_test.swift

@@ -1,4 +1,5 @@
-// RUN: %target-typecheck-verify-swift
+// RUN: %empty-directory(%t/cache)
+// RUN: %target-typecheck-verify-swift -module-cache-path %t/cache
 
 // REQUIRES: objc_interop
 // REQUIRES: OS=macosx

test/Interpreter/SDK/GLKit.swift

@@ -1,4 +1,5 @@
-// RUN: %target-run-simple-swift | %FileCheck %s
+// RUN: %empty-directory(%t/cache)
+// RUN: %target-run-simple-swift(-module-cache-path %t/cache) | %FileCheck %s
 // REQUIRES: executable_test
 
 // NOTE: Clang used to miscompile GLKit functions on i386. rdar://problem/19184403

test/Interpreter/SDK/cf_extensions.swift

@@ -1,4 +1,5 @@
-// RUN: %target-run-simple-swift
+// RUN: %empty-directory(%t/cache)
+// RUN: %target-run-simple-swift(-module-cache-path %t/cache)
 // REQUIRES: executable_test
 
 // REQUIRES: objc_interop

test/Interpreter/SDK/cf_type_bridging.swift

@@ -1,4 +1,5 @@
-// RUN: %target-run-simple-swift
+// RUN: %empty-directory(%t/cache)
+// RUN: %target-run-simple-swift(-module-cache-path %t/cache)
 // REQUIRES: executable_test
 
 // REQUIRES: objc_interop

test/Interpreter/SDK/mapkit_header_static.swift

@@ -1,4 +1,5 @@
-// RUN: %target-run-simple-swift | %FileCheck %s
+// RUN: %empty-directory(%t/cache)
+// RUN: %target-run-simple-swift(-module-cache-path %t/cache) | %FileCheck %s
 // REQUIRES: executable_test
 
 // REQUIRES: objc_interop

test/Interpreter/SDK/objc_ns_enum.swift

@@ -1,4 +1,5 @@
-// RUN: %target-run-simple-swift
+// RUN: %empty-directory(%t/cache)
+// RUN: %target-run-simple-swift(-module-cache-path %t/cache)
 // REQUIRES: executable_test
 
 // NSButtonType (from AppKit) and UIViewAnimationCurve (from UIKit) both have