bug 845134 - enable more logging
Bug 685652 - we need a pushPermissionsEnv equivalent to pushPrefEnv in SpecialPowers. r=jdm
Bug 853178 - Remove all SRC_PCDELTA source notes except on JSOP_CASE opcodes; rename SRC_PCDELTA to SRC_NEXTCASE. r=njn.
Bug 620141 - eval cache should key based on calling script and pc, not calling function. r=jorendorff.
Bug 848197 - Arrow functions should not be constructors. r=Waldo.
Bug 848051 - Allow 'arguments' in generator-expressions. r=ejpbruel.