...at least some of which have presumably been missing from
ce43d0ae "use consistent #define checks for the
Windows platform" by accident (and some just clean up comments)

Change-Id: I5532685c7df96ae3c8a25b73d8064d7433964a9b
Reviewed-on: https://gerrit.libreoffice.org/68580Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>