Fix static initializers on x64

Review URL: https://codereview.chromium.org/14143009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14465 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
HConstant::InNewSpace() should be a constant function

BUG=

Review URL: https://codereview.chromium.org/14455004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14466 ce2b1a6d-e550-0410-aec6-3dcde31c8c00