On Linux running gyp_v8 will generate makefiles for all architectures. On other platforms generate for ia32 only as that is what is currently supported.

The output (out) directory is still shared.

R=jkummerow@chromium.org

BUG=none
TEST=none

Review URL: http://codereview.chromium.org//7104083

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00