Fix windows test runner.

TBR=titzer@chromium.org

Review URL: https://codereview.chromium.org/494603002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23221 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler/machine-type.cc

@@ -11,7 +11,7 @@ namespace compiler {
 
 #define PRINT(bit)         \
   if (type & bit) {        \
-    if (before) os << "|"; \
+    if (before) os << "+"; \
     os << #bit;            \
     before = true;         \
   }