Version 3.17.0

Enabled parallel sweeping.

Don't try to unlink instructions twice during GVN (Chromium issue 175141)

Fixed code flusher disabling while marking incrementally. (Chromium issue 173458, 168582)

Don't use TLS for space iterators. (issue 2531)

Added new GetHeapStatistics API entry and deprecated old one.

Fixed DoubleStackSlot-to-DoubleStackSlot moves on ia32. Unified platform-independent code. (Chromium issue 173907)

Added --trace-array-abuse to help find OOB accesses.

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@13663 ce2b1a6d-e550-0410-aec6-3dcde31c8c00