Add Diskattrmap, Scsiattrmap for probed scsi devices

Additional changes

- Use ``iota`` for constants
- Remove unncessary C header files
- ``new-cmd`` now depends on codegangsta cli

pkg/cpu/cpu.go

@@ -18,7 +18,9 @@
 
 package cpu
 
-// #include "cpu.h"
+// int has_sse41 (void);
+// int has_avx (void);
+// int has_avx2 (void);
 import "C"
 
 func HasSSE41() bool {