#223 winuser.h: adds missing titlebarinfo guards

According to

http://msdn.microsoft.com/library/en-us/winui/winui/
windowsuserinterface/windowing/windows/
windowreference/windowfunctions/gettitlebarinfo.asp

and

http://msdn.microsoft.com/library/en-us/winui/winui/
windowsuserinterface/windowing/windows/
windowreference/windowstructures/titlebarinfo.asp

minimum OS version required for TITLEBARINFO and
GetTitleBarInfo() is Windows 98
or Windows NT 4.0 with Service Pack 6. However,
w32api 3.2 does not guard these from earlier versions.

[Anonymous]

patch for w32api 3.2