Revert of Make it possible to compile d8 for the host toolset as well

Revert of Make it possible to compile d8 for the host toolset as well (https://codereview.chromium.org/139493002/)

Reason for revert:
still doesn't work on arm

Original issue's description:
> Make it possible to compile d8 for the host toolset as well
>
> 2nd attempt. Use a different output path for the host d8.
>
> BUG=v8:1775
> R=machenbach@chromium.org
> LOG=n
>
> Committed: https://code.google.com/p/v8/source/detail?r=18621

R=machenbach@chromium.org
TBR=machenbach@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=v8:1775
Committed: https://code.google.com/p/v8/source/detail?r=18623

[jochen (gone - plz use gerrit), 2014-01-15 15:46:57]

Created Revert of Make it possible to compile d8 for the host toolset as well

[Michael Achenbach, 2014-01-15 15:48:19]

On 2014/01/15 15:46:57, jochen wrote:
> Created Revert of Make it possible to compile d8 for the host toolset as well

lgtm

[Michael Achenbach, 2014-01-15 15:48:19]

On 2014/01/15 15:46:57, jochen wrote:
> Created Revert of Make it possible to compile d8 for the host toolset as well

lgtm

[jochen (gone - plz use gerrit), 2014-01-15 15:58:35]

Committed patchset #1 manually as r18623.