Bug 1081776 - Remove tools/reorder/, which is ancient and unused. r=froydnj.

--HG--
extra : rebase_source : 55ef98f695525a1cae177b3572aea05e4b854e91
Bug 1081812 - Remove tools/performance/layout/, which is ancient and unused. r=dbaron.

--HG--
extra : rebase_source : 9448be307e04eac8671359b913761f23d613f430
Bug 1081809 - Remove tools/tests/, which is ancient and unused. r=roc.
DONTBUILD because NPOTB.

--HG--
extra : rebase_source : fa88d5c93abdbc04fbbb01ae26a476479a049d37