Version 3.27.30 (based on bleeding_edge revision r21851)

Fix representation of Phis for mutable-heapnumber-in-object-literal properties (issue 3392).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@21852 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/trunk' into trunk