No bug - Fix broken header guard in resource_manager.h. r=jesup a=trivial

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extra : rebase_source : 546d7b28d16d8e670b7607aa5400055b7afa03ee
Bug 884022 - fix clang warnings about pointer-to-int comparisons in test_AsXXX_helpers.cpp; r=dholbert a=test-only

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extra : rebase_source : 863336f468061818184992daab75007b78ffb840
Bug 885979 - Add support for enabling Contacts API debugging output at runtime. r=gwagner a=leo+

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extra : rebase_source : c89acad2805ce571d55a8390f8c1791620612364