Revert of Fix bootstrap on windows

Revert of Fix bootstrap on windows (patchset #2 id:20001 of https://codereview.chromium.org/2136303002/ )

Reason for revert:
Appears to have broken the roller... :(

Original issue's description:
> Fix bootstrap on windows
> 
> Also uses ROOT_DIR instead of hardcoding the value.
> 
> R=dnj
> 
> Committed: https://github.com/luci/recipes-py/commit/ce485a8a394dcc1561b5ecdd337a85002083de5b

TBR=dnj@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://github.com/luci/recipes-py/commit/ba76686b6729174d9b7c7900ada4946ea5329632

[martiniss, 2016-07-12 00:41:35]

The CQ bit was checked by martiniss@chromium.org

[martiniss, 2016-07-12 00:41:36]

Created Revert of Fix bootstrap on windows

[commit-bot: I haz the power, 2016-07-12 00:41:40]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-12 00:41:45]

Description was changed from

==========
Revert of Fix bootstrap on windows (patchset #2 id:20001 of
https://codereview.chromium.org/2136303002/ )

Reason for revert:
Appears to have broken the roller... :(

Original issue's description:
> Fix bootstrap on windows
> 
> Also uses ROOT_DIR instead of hardcoding the value.
> 
> R=dnj
> 
> Committed:
https://github.com/luci/recipes-py/commit/ce485a8a394dcc1561b5ecdd337a8500208...

TBR=dnj@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Fix bootstrap on windows (patchset #2 id:20001 of
https://codereview.chromium.org/2136303002/ )

Reason for revert:
Appears to have broken the roller... :(

Original issue's description:
> Fix bootstrap on windows
> 
> Also uses ROOT_DIR instead of hardcoding the value.
> 
> R=dnj
> 
> Committed:
https://github.com/luci/recipes-py/commit/ce485a8a394dcc1561b5ecdd337a8500208...

TBR=dnj@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed:
https://github.com/luci/recipes-py/commit/ba76686b6729174d9b7c7900ada4946ea53...
==========

[commit-bot: I haz the power, 2016-07-12 00:41:47]

Committed patchset #1 (id:1) as
https://github.com/luci/recipes-py/commit/ba76686b6729174d9b7c7900ada4946ea53...