Version 3.29.74 (based on bleeding_edge revision r24014)

Support stepping into generator function (issue 3572).

Class syntax parsing (issue 3330).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@24016 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/trunk' into trunk