RFC: A new meta intrinsic header file for x86 intrinsics

[H.J. Lu]

Hi,

For each new set of x86 intrinsics, we introduce a new header file. It
will be desirable for users just to include one header file for all
intrinsics, current and future. Icc has <ia32intrin.h>, which includes
proper individual intrinsic header files and users just need
to include <ia32intrin.h> to get access to all intrinsics.

We will implement meta intrinsic header file for AVX intrinsics.
However, I am not sure if <ia32intrin.h> is the best name for it.
Does anyone have any suggestions, how about <x86intrin.h>?

Thanks.


H.J.