Upgrade V8
Fix build for w32 - it has to be static_libs now.
Revert "Fix build for w32 - it has to be static_libs now."

This reverts commit 8d8fb8d0374b3b6e5ca3d74b4e16601be637b5b5.
Revert "Upgrade V8"

This reverts commit acf35ea4cf4e032e6c6b8808734ce95eb5f5aac4.