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Update x86 CPU detection configure check.

Commit 6577534a80c8 switched from using __get_cpuid() to
 __get_cpuid_count(), but the corresponding configure check was not
 updated.
Since __get_cpuid_count() was introduced much later, make sure we
 check for the function we actually use.

Thanks to Mark Harris for the report.

--- a/configure.ac

+++ b/configure.ac

@@ -724,7 +724,7 @@

                  unsigned int CPUInfo2;

                  unsigned int CPUInfo3;

                  unsigned int InfoType;

-                 __get_cpuid(InfoType, &CPUInfo0, &CPUInfo1, &CPUInfo2, &CPUInfo3);

+                 __get_cpuid_count(InfoType, 0, &CPUInfo0, &CPUInfo1, &CPUInfo2, &CPUInfo3);

             ]])],

             [AC_MSG_RESULT([C method])

                  AC_DEFINE([CPU_INFO_BY_C], [1], [Get CPU Info by c method])],