Version 3.24.17

Make it possible to compile d8 for the host toolset as well (issue 1775).

Make cells pointing to JSObjects weak in optimized code (issue 2073).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@18634 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/trunk' into trunk