#736 Commit 0f9569 broke building OpenBLAS

[martin_frbg]

The addition of a struct with a "DWORD" member named CR in #0f9569 has created (or uncovered) a build problem for the OpenBLAS code (discussed in https://github.com/xianyi/OpenBLAS/issues/1503 )
where conditional compilation of code with "#if defined(CR)" is used in several places (and has been for years)

[LIU Hao]

This cannot be fixed because the identifier of struct fields has to be kept the same as what Microsoft people use.