Changed script so it detects OS bitness and finds vcvars32.bat or vcvars64.bat by searching through the VS installation that contains the C++ compiler Change-Id: I9fc5708e5c80e10976d9d55b662178e360aeed62 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/196260 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <stephan.bergmann@collabora.com>