[RFA] Fix sysroot-tests, adding --print-sysroot

[Tristan Gingold]

On 17 Oct 2014, at 06:19, Hans-Peter Nilsson <hans-peter.nilsson@axis.com> wrote:

[...]
> 
> Ok to commit this to master?
> To the 2.25 branch?

Ok for the backport.

Tristan.