[PATCH stable] setup: set SystemRoot even if .hg doesn't exist (issue3073)

[Mads Kiilerich]

Yuya Nishihara wrote, On 10/30/2011 02:18 PM:
> # HG changeset patch
> # User Yuya Nishihara<yuya at tcha.org>
> # Date 1319980502 -32400
> # Branch stable
> # Node ID 4a702fd4fcf5f161af2ea49d543eb661add84a6f
> # Parent  bf55991af17e7e07593cceb2163328ae8cf5ee65
> setup: set SystemRoot even if .hg doesn't exist (issue3073)

Is there any reason we don't move the whole env initialisation outside 
the .hg check? Do buildhgextindex have different needs than other 
invocations of hg?

/Mads