No bug - Touch clobber for all the various IDB WebILD-ifications that recently landed.
Bug 712105 - Use default cursor rather than last cursor for 'cursor: context-menu' on Windows and OS/2. r=jimm
Bug 888548 - Part 1: Add mozilla::IsEnum to TypeTraits.h. r=froydnj
Bug 888548 - Part 2: Refactor and cleanup mozilla::Atomic<T> implementation. r=froydnj

This moves the increment and decrement operators from detail::AtomicBase to
detail::AtomicBaseIncDec and moves the implementation of the assignment
operator into detail::AtomicBase. Additionally, this changes the integral
implementation to use mozilla::EnableIf for its specialization.
Bug 888548 - Part 3: Add enum support to mozilla::Atomic<T>. r=froydnj

Due to a bug in GCC, the compareExchange function is not available with enum types.
Bug 898797 - Use nsHTMLReflowState::ApplyRelativePositioning when placing floats. r=dbaron
Bug 898797 - Reftests for relatively positioned floats. r=dholbert
Bug 900209 - static_cast uint64_t value to "unsigned long long" when printing it with %llx, to silence Wformat build warning on 64-bit platforms. r=smaug
Bug 898184 - Restore telemetry measurements that were removed when transitioning to the SessionWorker. r=ttaubert