Update archive_build to push prebuilts to Google storage land. Enabled host prebuilt upload on the x86-generic target.
Update archive_build to push prebuilts to Google storage land.
Enabled host prebuilt upload on the x86-generic target.

BUG=NA
TEST=Tested on an x86-generic build to ensure it uploads as expected

Review URL: http://codereview.chromium.org/4128014

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