Version 3.23.5

Fixed missing type feedback check for Generic*String addition. (Chromium issue 318671)

Fixed duplicate check in DependentCode::Insert. (Chromium issue 318454)

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@17777 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/trunk' into trunk