Bug 1080291 (part 1) - Remove foldelf.cpp. r=glandium.

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extra : rebase_source : 0629b09f791818252e6fdafbb74c3465ed2612fe
Bug 1080291 (part 2) - Remove thrashview.cpp. r=dbaron.

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extra : rebase_source : 2f5821a3de1e6a8fdef31a65bbb7d88530c9bab7
Bug 1080291 (part 3) - Remove watch.sh. r=dbaron.

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extra : rebase_source : dbb2e4f5940e6844b39edee3e70d3cca83efbc5f
Bug 1080291 (part 4) - Remove Gross Dynamic Footprint Reports code. r=dbaron.

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extra : rebase_source : 7997773bc860a58a85514a55cbf93a118cd33d58
Bug 1080291 (part 5) - Rename tools/footprint/ as tools/leak-gauge/. r=dbaron.
DONTBUILD because this directory is NPOTB.

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rename : tools/footprint/leak-gauge.html => tools/leak-gauge/leak-gauge.html
rename : tools/footprint/leak-gauge.pl => tools/leak-gauge/leak-gauge.pl