Revert "Changes to support ARM cross compilation."
Revert "Changes to support ARM cross compilation."

This reverts commit e61c324991b41ad40e86f5c557a91622d2845b9d.

There are many places where '/x86' is hard-coded into directory paths. All
those places need to be modified before we can change it in just one place.

See http://code.google.com/p/chromium-os/issues/detail?id=1085

Review URL: http://codereview.chromium.org/501066

crawford/scripts,marineam/coreos-scripts,marineam/coreos-scripts,endocode/scripts,andrejro/coreos--scripts,gtank/scripts,fivethreeo/scripts,zhang0137/scripts,BugRoger/scripts,mischief/scripts,zhang0137/scripts,bcwaldon/coreos-scripts,nicescale/scripts,coreos/scripts,sigma/coreos-scripts,fivethreeo/scripts,glevand/coreos--scripts,marineam/coreos-scripts,BugRoger/scripts,vmware/coreos-scripts,mjg59/scripts,mischief/scripts,vmware/coreos-scripts,fivethreeo/scripts,nicescale/scripts,endocode/scripts,trnubo/scripts,mjg59/scripts,glevand/coreos--scripts,trnubo/scripts,mischief/scripts,BugRoger/scripts,nicescale/scripts,crawford/scripts,mjg59/scripts,sigma/coreos-scripts,gtank/scripts,endocode/scripts,smilart/scripts,andrejro/coreos--scripts,gtank/scripts,crawford/scripts,zhang0137/scripts,smilart/scripts,coreos/scripts,sigma/coreos-scripts,bcwaldon/coreos-scripts,bcwaldon/coreos-scripts,smilart/scripts,andrejro/coreos--scripts,vmware/coreos-scripts,trnubo/scripts