test: get most of the multifile tests working on Windows

We cannot link against the DSO (dll) on Windows and instead link against
the import library.  Let the driver understand this and use the standard
linking technique.  Adjust the name of the emitted files accordingly and
use the `%target-library-name` macro more freely.

Two tests remain:
- multifile.protocol-conformance-member
    The getter is synthesized by not exported so `llvm-nm` is unable to
    see it
- multifile.nested_types
    Windows uses the singleton strategy, so the emitted full type
    metadata does not have the reference to the value witness table for
    Void

Author: compnerd

test/multifile/default-arguments/two-modules/main.swift

@@ -1,11 +1,11 @@
 // RUN: %empty-directory(%t)
 
 // RUN: mkdir -p %t/onone %t/wmo
-// RUN: %target-build-swift -emit-module -emit-module-path %t/onone/library.swiftmodule -module-name=library -emit-library %S/Inputs/library1.swift %S/Inputs/library2.swift -o %t/onone/library%{target-shared-library-suffix} -swift-version 4
-// RUN: %target-build-swift %S/main.swift %t/onone/library%{target-shared-library-suffix} -I %t/onone/ -o %t/onone/main -swift-version 4
+// RUN: %target-build-swift -emit-module -emit-module-path %t/onone/library.swiftmodule -module-name=library -emit-library %S/Inputs/library1.swift %S/Inputs/library2.swift -o %t/onone/%target-library-name(rary) -swift-version 4
+// RUN: %target-build-swift %S/main.swift -I %t/onone/ -o %t/onone/main -swift-version 4 -L%t/onone -lrary
 
-// RUN: %target-build-swift -emit-module -emit-module-path %t/wmo/library.swiftmodule -module-name=library -emit-library -O -wmo %S/Inputs/library1.swift %S/Inputs/library2.swift -o %t/wmo/library%{target-shared-library-suffix} -swift-version 4
-// RUN: %target-build-swift %S/main.swift %t/wmo/library%{target-shared-library-suffix} -I %t/wmo/ -o %t/wmo/main -swift-version 4
+// RUN: %target-build-swift -emit-module -emit-module-path %t/wmo/library.swiftmodule -module-name=library -emit-library -O -wmo %S/Inputs/library1.swift %S/Inputs/library2.swift -o %t/wmo/%target-library-name(rary) -swift-version 4
+// RUN: %target-build-swift %S/main.swift -I %t/wmo/ -o %t/wmo/main -swift-version 4 -L%t/wmo -lrary
 
 import library
 

test/multifile/extensions/two-modules/main.swift

@@ -1,11 +1,11 @@
 // RUN: %empty-directory(%t)
 
 // RUN: mkdir -p %t/onone %t/wmo
-// RUN: %target-build-swift -emit-module -emit-module-path %t/onone/library.swiftmodule -module-name=library -emit-library %S/Inputs/library.swift -o %t/onone/library%{target-shared-library-suffix}
-// RUN: %target-build-swift %S/main.swift %t/onone/library%{target-shared-library-suffix} -I %t/onone/ -o %t/onone/main
+// RUN: %target-build-swift -emit-module -emit-module-path %t/onone/library.swiftmodule -module-name=library -emit-library %S/Inputs/library.swift -o %t/onone/%target-library-name(rary)
+// RUN: %target-build-swift %S/main.swift -I %t/onone/ -o %t/onone/main -L%t/onone -lrary
 
-// RUN: %target-build-swift -emit-module -emit-module-path %t/wmo/library.swiftmodule -module-name=library -emit-library -O -wmo %S/Inputs/library.swift -o %t/wmo/library%{target-shared-library-suffix}
-// RUN: %target-build-swift %S/main.swift %t/wmo/library%{target-shared-library-suffix} -I %t/wmo/ -o %t/wmo/main
+// RUN: %target-build-swift -emit-module -emit-module-path %t/wmo/library.swiftmodule -module-name=library -emit-library -O -wmo %S/Inputs/library.swift -o %t/wmo/%target-library-name(rary)
+// RUN: %target-build-swift %S/main.swift -I %t/wmo/ -o %t/wmo/main -L%t/wmo -lrary
 
 import library
 

test/multifile/multiconformanceimpls/main.swift

@@ -1,13 +1,18 @@
 // RUN: %empty-directory(%t)
-// RUN: %target-build-swift-dylib(%t/%{target-shared-library-prefix}A%{target-shared-library-suffix}) %S/Inputs/A.swift -emit-module -emit-module-path %t/A.swiftmodule -module-name A
+//
+// RUN: %target-build-swift-dylib(%t/%target-library-name(A)) %S/Inputs/A.swift -emit-module -emit-module-path %t/A.swiftmodule -module-name A
 // RUN: %target-codesign %t/%target-library-name(A)
-// RUN: %target-build-swift-dylib(%t/%{target-shared-library-prefix}B%{target-shared-library-suffix}) %S/Inputs/B.swift -emit-module -emit-module-path %t/B.swiftmodule -module-name B -I%t -L%t -lA
+//
+// RUN: %target-build-swift-dylib(%t/%target-library-name(B)) %S/Inputs/B.swift -emit-module -emit-module-path %t/B.swiftmodule -module-name B -I%t -L%t -lA
 // RUN: %target-codesign %t/%target-library-name(B)
-// RUN: %target-build-swift-dylib(%t/%{target-shared-library-prefix}C%{target-shared-library-suffix}) %S/Inputs/C.swift -emit-module -emit-module-path %t/C.swiftmodule -module-name C -I%t -L%t -lA
+//
+// RUN: %target-build-swift-dylib(%t/%target-library-name(C)) %S/Inputs/C.swift -emit-module -emit-module-path %t/C.swiftmodule -module-name C -I%t -L%t -lA
 // RUN: %target-codesign %t/%target-library-name(C)
-// RUN: %target-build-swift %s -I %t -o %t/a.out -L %t %target-rpath(%t) -lA -lB -lC
-// RUN: %target-codesign %t/a.out
-// RUN: %target-run %t/a.out %t/%target-library-name(A) %t/%target-library-name(B) %t/%target-library-name(C) |  %FileCheck %s
+//
+// RUN: %target-build-swift %s -I %t -o %t/main.out -L %t %target-rpath(%t) -lA -lB -lC
+// RUN: %target-codesign %t/main.out
+//
+// RUN: %target-run %t/main.out %t/%target-library-name(A) %t/%target-library-name(B) %t/%target-library-name(C) |  %FileCheck %s
 
 // REQUIRES: executable_test
 

test/multifile/protocol-conformance-member.swift

@@ -1,6 +1,6 @@
 // RUN: %empty-directory(%t)
-// RUN: %target-build-swift -emit-library %s %S/Inputs/protocol-conformance-member-helper.swift -o %t/libTest.dylib -module-name Test
-// RUN: llvm-nm %t/libTest.dylib | %FileCheck %s
+// RUN: %target-build-swift -emit-library %s %S/Inputs/protocol-conformance-member-helper.swift -o %t/%target-library-name(Test) -module-name Test
+// RUN: llvm-nm %t/%target-library-name(Test) | %FileCheck %s
 
 // CHECK: $s4Test10CoolStructV10coolFactorSdvg
 

test/multifile/synthesized-accessors/two-modules/main.swift

@@ -1,11 +1,11 @@
 // RUN: %empty-directory(%t)
 
 // RUN: mkdir -p %t/onone %t/wmo
-// RUN: %target-build-swift -emit-module -emit-module-path %t/onone/library.swiftmodule -module-name=library -emit-library %S/Inputs/library.swift -o %t/onone/library%{target-shared-library-suffix}
-// RUN: %target-build-swift %S/main.swift %t/onone/library%{target-shared-library-suffix} -I %t/onone/ -o %t/onone/main
+// RUN: %target-build-swift -emit-module -emit-module-path %t/onone/library.swiftmodule -module-name=library -emit-library %S/Inputs/library.swift -o %t/onone/%target-library-name(rary)
+// RUN: %target-build-swift %S/main.swift -I %t/onone/ -o %t/onone/main -L%t/onone -lrary
 
-// RUN: %target-build-swift -emit-module -emit-module-path %t/wmo/library.swiftmodule -module-name=library -emit-library -O -wmo %S/Inputs/library.swift -o %t/wmo/library%{target-shared-library-suffix}
-// RUN: %target-build-swift %S/main.swift %t/wmo/library%{target-shared-library-suffix} -I %t/wmo/ -o %t/wmo/main
+// RUN: %target-build-swift -emit-module -emit-module-path %t/wmo/library.swiftmodule -module-name=library -emit-library -O -wmo %S/Inputs/library.swift -o %t/wmo/%target-library-name(rary)
+// RUN: %target-build-swift %S/main.swift -I %t/wmo/ -o %t/wmo/main -L%t/wmo -lrary
 
 import library