common.props: Specify _WIN32_WINNT and _WIN32_IE too.
Compress toolbarw7.png.
"Output" property page: Remove some dead code.
"Output" property page: "Shader" and "Rotation" were sometimes wrongly displayed as unavailable for "Sync renderer".

This commit fixes #3672.
Improve the Get(Cur)DispMode and SetDispMode functions.

Fixes CID #966222.
Ensure the correct thing is casted.

Fixes CID #965944.