test: adjust Runtime Paths test for unified builds

When building the toolchain in unified mode, we fail to search for
headers and libraries.  Adjust the invocation to account for the layout
differences.

Author: compnerd

test/Runtime/Paths.cpp

@@ -5,7 +5,7 @@
 // RUN: touch %t/swift-root/libexec/swift/Foo.exe
 // RUN: touch %t/swift-root/bin/Foo.exe
 
-// RUN: %target-clang %s -std=c++11 -I %swift_src_root/include -I %swift_src_root/stdlib/public/SwiftShims -I %clang-include-dir -isysroot %sdk -L%swift_obj_root/lib/swift/%target-sdk-name/%target-arch -lswiftCore -o %t/paths-test
+// RUN: %target-clang %s -std=c++11 -I %swift_src_root/include -I %swift_obj_root/include -I %swift_src_root/stdlib/public/SwiftShims -I %clang-include-dir -isysroot %sdk -L%swift_obj_root/lib/swift/%target-sdk-name/%target-arch -L%llvm_obj_root/lib/swift/%target-sdk-name/%target-arch -lswiftCore -o %t/paths-test
 // RUN: %target-codesign %t/paths-test
 // RUN: %target-run %t/paths-test | %FileCheck %s
 // RUN: env %env-SWIFT_ROOT=%t/swift-root %target-run %t/paths-test | %FileCheck %s --check-prefix CHECK-FR