Bug 884569 - Support for removing untracked files from a directory; r=glandium

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extra : rebase_source : e98fcbf839085ad6bc2e7a8fd3353834557caeec
Bug 875934 - Move LIBRARY_NAME to moz.build (batch #1); r=mshal

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extra : rebase_source : 385d3fd65475ffc18ee44ae088753649470e214b
Bug 875934 - Move LIBRARY_NAME to moz.build (batch #2); r=mshal

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extra : rebase_source : 555b28e5c3412ffc210c60b6fe2fee6f053fd587