Windows drivers do this as well and some apps rely on this (it might
fix Sketchup but I can't reproduce the issues on this system).

wgl: Duplicate some single buffered pixel formats for bitmap rendering and restrict bitmap rendering to these formats.

The use of direct / indirect rendering is now tied to the bitmapFormat
flag of a pixel format. Indirect is fine for bitmap rendering since on
windows it is only supported using the software gdi renderer and
indirect rendering can also indicate software rendering.

This was needed unconditionally in the past to apply fog, but since we're
using the ARBfp fog defines it is only needed if an sRGB correction is done
at the end of the shader.

msvfw32: Clearly separate the 16-bit code out of the rest by wrapping 16-bit message functions in thunks.

fusion: CompareAssemblyIdentity() and GetAssemblyIdentityFromFile() are unused stubs and don't belong in fusion.dll. So remove them.

inetmib1: Make sure the successor to an item doesn't have an identical key as it, to prevent infinite loops in table enumeration.

wininet: Add a read-ahead buffer to allow InternetQueryDataAvailable to return the right values in chunked mode.