fixes the gyp file so that we generate register description header files etc for x86-64 when being built for x86-64, so that chrome on linux x86-64 will load nacl-x86-64 nexes.
fixes the gyp file so that we generate register description header
files etc for x86-64 when being built for x86-64, so that chrome on
linux x86-64 will load nacl-x86-64 nexes.

tested w/ T-o-T chrome sync'd as of 2010-04-08 late morning-ish.

Review URL: http://codereview.chromium.org/1633008

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@2003 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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