Fix bug when processing blank nodes with reverse properties

See http://lists.w3.org/Archives/Public/public-linked-json/2013Oct/0046.html

flatten-0045-in.jsonld

@@ -0,0 +1,8 @@
+{
+  "@context": {
+    "foo": "http://example.org/foo",
+    "bar": { "@reverse": "http://example.org/bar", "@type": "@id" }
+  },
+  "foo": "Foo",
+  "bar": [ "http://example.org/origin", "_:b0" ]
+}

flatten-0045-out.jsonld

@@ -0,0 +1,14 @@
+[
+  {
+    "@id": "_:b0",
+    "http://example.org/foo": [ { "@value": "Foo" } ]
+  },
+  {
+    "@id": "_:b1",
+    "http://example.org/bar": [ { "@id": "_:b0" } ]
+  },
+  {
+    "@id": "http://example.org/origin",
+    "http://example.org/bar": [ { "@id": "_:b0" } ]
+  }
+]

flatten-manifest.jsonld

@@ -318,6 +318,13 @@
       "input": "flatten-0044-in.jsonld",
       "context": "flatten-0044-context.jsonld",
       "expect": "flatten-0044-out.jsonld"
+    }, {
+      "@id": "#t0045",
+      "@type": ["jld:PositiveEvaluationTest", "jld:FlattenTest"],
+      "name": "Blank nodes with reverse properties",
+      "purpose": "Proper (re-)labeling of blank nodes if used with reverse properties.",
+      "input": "flatten-0045-in.jsonld",
+      "expect": "flatten-0045-out.jsonld"
     }
   ]
 }

toRdf-0119-in.jsonld

@@ -0,0 +1,8 @@
+{
+  "@context": {
+    "foo": "http://example.org/foo",
+    "bar": { "@reverse": "http://example.org/bar", "@type": "@id" }
+  },
+  "foo": "Foo",
+  "bar": [ "http://example.org/origin", "_:b0" ]
+}

toRdf-0119-out.nq

@@ -0,0 +1,3 @@
+<http://example.org/origin> <http://example.org/bar> _:b0 .
+_:b0 <http://example.org/foo> "Foo" .
+_:b1 <http://example.org/bar> _:b0 .

toRdf-manifest.jsonld

@@ -800,6 +800,13 @@
       },
       "input": "toRdf-0118-in.jsonld",
       "expect": "toRdf-0118-out.nq"
+    }, {
+      "@id": "#t0119",
+      "@type": ["jld:PositiveEvaluationTest", "jld:ToRDFTest"],
+      "name": "Blank nodes with reverse properties",
+      "purpose": "Proper (re-)labeling of blank nodes if used with reverse properties.",
+      "input": "toRdf-0119-in.jsonld",
+      "expect": "toRdf-0119-out.nq"
     }
   ]
 }