Stop using 2MiB pages for x86-64. This finalizes the ABI so now we are using version 8 for both IA32 and x86-64.
Stop using 2MiB pages for x86-64. This finalizes the ABI so now we are using
version 8 for both IA32 and x86-64.

Review URL: http://codereview.chromium.org/2107008

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@2282 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client