Version 3.24.26 (based on bleeding_edge revision r18894)

ES6: Map and Set needs to normalize minus zero (issue 3069).

Make `String.prototype.{starts,ends}With` throw when passing a regular expression (issue 3070).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@18895 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/trunk' into trunk