fdo#77891 fix python crash when in GUI mode, target WinXP with VS2012

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