Bug 1361403 - Support Symbol Upload for win 64 Nightly. r=dustin

This will fail until Bug 1265537 lands, which is what will switch windows to SIMPLE NAME package format.

MozReview-Commit-ID: J0zVLptvxNO

--HG--
extra : rebase_source : 6c388f24bce78ee6f6a8d7eb17cd6bce036b1d35

taskcluster/ci/upload-symbols/kind.yml

@@ -20,6 +20,7 @@ only-for-build-platforms:
     - android-api-15-nightly/opt
     - android-x86-nightly/opt
     - macosx64-nightly/opt
+    - win64-nightly/opt
 
 job-template:
    label: # see transforms