Backed out changeset 9dbb23d8ab8a for reftest make target bustage

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extra : rebase_source : aa041efe4b34190bb194a85897db5161c0eefe16
Backout 4682ed369545 (bug 841713) for reftest make target bustage

--HG--
extra : rebase_source : 6bf45c9f33563109cf6d17197f9184a3a336efe0