as the functions to check for a valid filehandle don't work according to
the documentation. Python in LO-Context is run from GUI anyway, and thus
won't have those hooked up.
Change-Id: I8bc048463b0dc1a25c1b6ba7422623dda110eddc
VS2012 did change return value of fileno function, this results in a
crash when run in GUI mode (but not when launching from a shell), as
python tries to access the nonexisting stdin/stdout/stderr
Also explicitly target Windows XP
Change-Id: Ic783713b55453f3c38b2e766a664b7f4678711de
