Without this, first lines (up to "Other arguments passed directly
to configure:" inclusive) go to STDERR, while the rest to STDOUT

Change-Id: I95327d1ebe7941e5eb89f941ff1f9dc59297946b
Reviewed-on: https://gerrit.libreoffice.org/31999Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>