Version 3.24.38 (based on bleeding_edge revision r19347)

Merge experimental/a64 to bleeding_edge (issue 3113).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@19348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/trunk' into trunk