The define _HAS_EXCEPTIONS=0 is only required on Windows and is already set in the SCons build file and Visual Studio project files.
Review URL: http://codereview.chromium.org/67116

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1707 ce2b1a6d-e550-0410-aec6-3dcde31c8c00