Version 3.27.34 (based on bleeding_edge revision r21887)

Reduce number of writes to DependentCode array when inserting dependent IC (Chromium issue 305878).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@21888 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/trunk' into trunk