Add IRGen test for Explicit Module Build with a framework dependency.

Ensures auto-linking commands are issued for the framework import module.

Author: artemcm

test/ScanDependencies/explicit-framework-irgen.swift

@@ -0,0 +1,37 @@
+// RUN: %empty-directory(%t)
+// RUN: mkdir -p %t/clang-module-cache
+// RUN: mkdir -p %t/inputs
+// RUN: echo "/// Some cool comments" > %t/foo.swift
+// RUN: echo "public func foo() {}" >> %t/foo.swift
+// RUN: %target-swift-frontend -emit-module -emit-module-path %t/inputs/Foo.swiftmodule -emit-module-doc-path %t/inputs/Foo.swiftdoc -emit-module-source-info -emit-module-source-info-path %t/inputs/Foo.swiftsourceinfo -module-cache-path %t.module-cache %t/foo.swift -module-name Foo
+
+// RUN: echo "[{" > %/t/inputs/map.json
+// RUN: echo "\"moduleName\": \"Foo\"," >> %/t/inputs/map.json
+// RUN: echo "\"modulePath\": \"%/t/inputs/Foo.swiftmodule\"," >> %/t/inputs/map.json
+// RUN: echo "\"docPath\": \"%/t/inputs/Foo.swiftdoc\"," >> %/t/inputs/map.json
+// RUN: echo "\"sourceInfoPath\": \"%/t/inputs/Foo.swiftsourceinfo\"," >> %/t/inputs/map.json
+// RUN: echo "\"isFramework\": true" >> %/t/inputs/map.json
+// RUN: echo "}," >> %/t/inputs/map.json
+// RUN: echo "{" >> %/t/inputs/map.json
+// RUN: echo "\"moduleName\": \"Swift\"," >> %/t/inputs/map.json
+// RUN: echo "\"modulePath\": \"%/stdlib_module\"," >> %/t/inputs/map.json
+// RUN: echo "\"isFramework\": false" >> %/t/inputs/map.json
+// RUN: echo "}," >> %/t/inputs/map.json
+// RUN: echo "{" >> %/t/inputs/map.json
+// RUN: echo "\"moduleName\": \"SwiftOnoneSupport\"," >> %/t/inputs/map.json
+// RUN: echo "\"modulePath\": \"%/ononesupport_module\"," >> %/t/inputs/map.json
+// RUN: echo "\"isFramework\": false" >> %/t/inputs/map.json
+// RUN: echo "}]" >> %/t/inputs/map.json
+
+// RUN: %target-swift-frontend -emit-object -emit-module -disable-implicit-swift-modules -explicit-swift-module-map-file %t/inputs/map.json -o %t/explicit-framework-irgen.o %s
+import Foo
+
+// This test is to verify autolinking behavior so it is macOS-specific. 
+// REQUIRES OS=macosx
+
+// RUN: otool -l %t/explicit-framework-irgen.o | %FileCheck %s
+// CHECK: cmd LC_LINKER_OPTION
+// CHECK-NEXT:  cmdsize 32
+// CHECK-NEXT:  count 2
+// CHECK-NEXT:  string #1 -framework
+// CHECK-NEXT:  string #2 Foo