Fix slashes in path references in -Rmodule-import test from r355778

Fixup for r355778 to fix all the Windows bots.  Apparently I already
forgot the lesson from r355482 :/.

llvm-svn: 355779
diff --git a/clang/test/Modules/relative-import-path.c b/clang/test/Modules/relative-import-path.c
index 3bcb343..4d988d8 100644
--- a/clang/test/Modules/relative-import-path.c
+++ b/clang/test/Modules/relative-import-path.c
@@ -16,11 +16,11 @@
 // CHECK: remark: building module 'B'
 // CHECK: remark: building module 'C'
 // CHECK: remark: finished building module 'C'
-// CHECK: remark: importing module 'C' from '[[WORKDIR]]/cache/C.pcm'
+// CHECK: remark: importing module 'C' from '[[WORKDIR]]{{[/\\]cache[/\\]}}C.pcm'
 // CHECK: remark: finished building module 'B'
-// CHECK: remark: importing module 'B' from '[[WORKDIR]]/cache/B.pcm'
-// CHECK: remark: importing module 'C' into 'B' from '[[WORKDIR]]/cache/C.pcm'
+// CHECK: remark: importing module 'B' from '[[WORKDIR]]{{[/\\]cache[/\\]}}B.pcm'
+// CHECK: remark: importing module 'C' into 'B' from '[[WORKDIR]]{{[/\\]cache[/\\]}}C.pcm'
 // CHECK: remark: finished building module 'A'
-// CHECK: remark: importing module 'A' from '[[WORKDIR]]/cache/A.pcm'
-// CHECK: remark: importing module 'B' into 'A' from '[[WORKDIR]]/cache/B.pcm'
-// CHECK: remark: importing module 'C' into 'B' from '[[WORKDIR]]/cache/C.pcm'
+// CHECK: remark: importing module 'A' from '[[WORKDIR]]{{[/\\]cache[/\\]}}A.pcm'
+// CHECK: remark: importing module 'B' into 'A' from '[[WORKDIR]]{{[/\\]cache[/\\]}}B.pcm'
+// CHECK: remark: importing module 'C' into 'B' from '[[WORKDIR]]{{[/\\]cache[/\\]}}C.pcm'