Elias Benali wrote the initial version of this patch.

Also fill in pfnAddPrivData2Chain in WintrustLoadFunctionPointers, which 
is the complement of WTHelperGetProvPrivateDataFromChain.

crypt32: Decode the message content on finishing in CDecodeMsg_Update for the streamed case as well as the non-streamed case.

The previous logic assumed that if NVTS or ATIFS are available they
will be used. This happens to be true for NVTS, but ATIFS is only used
if neither ARBFP nor GLSL are supported. This breaks fixed function
fragment processing on ATI r300 and newer cards