skimage self-tests: confirm correctness of bitmap hash values

tools/tests/skimage/output-expected/create-expectations/expectations.json

Index: tools/tests/skimage/output-expected/create-expectations/expectations.json
===================================================================
--- tools/tests/skimage/output-expected/create-expectations/expectations.json	(revision 0)
+++ tools/tests/skimage/output-expected/create-expectations/expectations.json	(revision 0)
@@ -0,0 +1,22 @@
+{
+   "actual-results" : {
+      "failed" : null,
+      "failure-ignored" : null,
+      "no-comparison" : null,
+      "succeeded" : null
+   },
+   "expected-results" : {
+      "1209453360120438698.png" : {
+         "allowed-digests" : [
+            [ "bitmap-64bitMD5", 1209453360120438698 ]
+         ],
+         "ignore-failure" : false
+      },
+      "12927999507540085554.png" : {
+         "allowed-digests" : [
+            [ "bitmap-64bitMD5", 12927999507540085554 ]
+         ],
+         "ignore-failure" : false
+      }
+   }
+}