Add some types from wtypes.h.  Move some constants to their proper location.
Add some types from wtypes.h.  Move some constants to their proper location.

Connorcpu/winapi-rs,ROki1988/winapi-rs,tomaka/winapi-rs,docbrown/winapi-rs,DoumanAsh/winapi-rs,DenisKolodin/winapi-rs,bungcip/winapi-rs,jmesmon/winapi-rs,Osspial/winapi-rs,Boddlnagg/winapi-rs,gentoo90/winapi-rs,overdrivenpotato/winapi-rs