Move CPU features into its own static library.

src/trusted/cpu_features/arch/x86/cpu_x86_test.c

Index: src/trusted/cpu_features/arch/x86/cpu_x86_test.c
diff --git a/src/trusted/validator/x86/nacl_cpuid_test.c b/src/trusted/cpu_features/arch/x86/cpu_x86_test.c
similarity index 88%
rename from src/trusted/validator/x86/nacl_cpuid_test.c
rename to src/trusted/cpu_features/arch/x86/cpu_x86_test.c
index a676e482c5d6bee1e58b9fe6887ea3baa8b8344d..c444a2c6f355a76801f52a05ef3443c298db8138 100644
--- a/src/trusted/validator/x86/nacl_cpuid_test.c
+++ b/src/trusted/cpu_features/arch/x86/cpu_x86_test.c
@@ -9,14 +9,14 @@
 #endif
 
 /*
- * nacl_cpuid_test.c
- * test main and subroutines for nacl_cpuid
+ * cpu_x86_test.c
+ * test main and subroutines for cpu_x86
  */
 #include "native_client/src/include/portability.h"
 #include <stdio.h>
-#include "native_client/src/trusted/validator/x86/nacl_cpuid.h"
+#include "native_client/src/trusted/cpu_features/arch/x86/cpu_x86.h"
 
-int main(int argc, char *argv[]) {
+int main(void) {
   NaClCPUFeaturesX86 fv;
   NaClCPUData cpu_data;
   int feature_id;