...(which includes environment variables), so read it as one (as is already done
in e.g. CreateSalInstance in vcl/source/app/salplug.cxx), esp. so since
lo_initialize in desktop/source/lib/init.cxx doesn't set it as an environment
variable

Change-Id: I557ecf4fcc5daba1e748af789847c8bbb9f563d6
Reviewed-on: https://gerrit.libreoffice.org/63801Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>