Bug 949008 - Rework accessing the treeManager to use private method which ensures that lock isn't held. r=kats
Bug 1018988 - Set up a low integrity temp directory when using the Windows content sandbox. r=mrbkap r=tabraldes r=froydnj
Bug 1065241 - Unbreak build on non-SPS platforms after bug 1049258. r=mchang
Bug 1065252 - Ignore Emacs .dir-locals.el. r=ted

Ignore Emacs's directory variable files .dir-locals.el in all directory.
It allows me to write ((c-mode . ((mode . c++)))) to view all .h files
in C++ mode especially for those .h files generated by IDL without
proper Emacs modeline.

DONTBUILD because NPOTB
Bug 1064976 - HTML structured log formatter raises UnboundLocalError. r=wlachance