Changes

*DONE**ARM raytrace regression fixed - bug**JS h264 decoder memory utlization bug fixed**Exact rooting fuzz bugs**Started ES6 self-hosted Arrays extras**Work on getting --ion-eager switch in the browser for fuzzers.**Landed in inbound a script to import selected subsets (ch06/, intl402/) of ECMAScript's test262 suite, those tests to run every push; landed those subsets in inbound.**Closed ({{bug|831507 }}) - Adding GGC post-write barriers to baseline compiler code generation.

DOING*Increase FFI asm.js calls*Static rooting analysis precision improvements*Green GGC on tbpl *Implement proxy [[invoke]] trap ({{bug|878605 }})*Removing unneeded #includes in SpiderMonkey in the hope of speeding up compile times (bug https://bugzilla.mozilla.org/show_bug.cgi?id=634839).*clean-up memory pressure patches. ({{bug|876029 }}) & ({{bug|869263 }})*find regression on Sunspider (between May 21st to 29th)*Bug 878992 - Remove unused TypeObject flag OBJECT_FLAG_UNINLINEABLE which was only relevant for now-defunct JM.BLOCKS*Bug 859609 - Enable inlining of anonymous lambdas and functions-which-use-their-scope-chains in Ion. BLOCKS*({{bug|877261 }}) -> ({{bug|869740 }}) -> exactly rooted browser