[Buildroot] [PATCH] utils/test-pkg: log the output of merge-config

[Matthew Weber]

Yann,

On Sun, Jul 8, 2018 at 5:26 AM, Yann E. MORIN <yann.morin.1998 at free.fr> wrote:
> Currently, the stdout is consigned to oblivion, while the stderr is not
> redirected at all. So, when the configuration under test redefines a
> symbol, like is the case when testing busybox for example, there is an
> ugly warning.
>
> So, just redirect both stdout and stderr to the logfile.
>
> Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>

Tested-by: Matt Weber <matthew.weber at rockwellcollins.com>