dlls/user/. Remove kludge from winapi_check.

- THIS macros cleanup.

Make sure we don't insert a module in the same list twice.

prelink tool.

they don't end up above the address space limit.

number of casts.

vartype.c

private. Also warn when one of the Dll* functions is using a different
internal name.

the bitmap headers that support this flag (BITMAPINFO: The first color
mask is in bmiColors[0], that's the same position as bV4RedMask in
BITMAPV4HEADER).

IInternetSecurityManager_SetSecuritySite.