tests/test-symlink-root

Fix for win32text corrupting files that have CRLF line endings. (issue302)
Also generate a warning when encountering this condition.

From Shun-ichi Goto in attachment win32text-patch3.txt for issue 302.

#!/bin/sh

hg init a
ln -s a link
cd a
echo foo > foo
hg status
hg status ../link