cbits/cycles.c: Restore support for 32 bit Intel CPUs
cbits/cycles.c: Restore support for 32 bit Intel CPUs

Tested on i386 and x86_64 Linux.

bos/criterion,bos/criterion,bgamari/criterion,iu-parfunc/criterion,iu-parfunc/criterion,bgamari/criterion,bos/criterion,bgamari/criterion,iu-parfunc/criterion