Bug 919564 - fix sigaction symbol in shell/js-gdb.gdb (r=bbouvier DONTBUILD)
Bug 915735 - Part 1: Work around a bug in the MSVC PGO instrumented builds which prevents xpcshell to run successfully as a host tool during builds; r=sfink

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extra : rebase_source : e9b3bfc9cae14d0a699f584ccbda80157b065bc0
Bug 919505 - Minimize the #includes in dom/ipc; r=jst