Adds documentation and reformats names

pkg/cutils/byteslice.go

@@ -7,6 +7,13 @@ import (
 	"unsafe"
 )
 
+// ByteSlice builds a byte Slice over a C pointer returned by a
+// C function.
+// The C pointer has to be passed as an unsafe.Pointer
+// and the size of the pointed memery area has to be
+// indicated through the size parameter.
+// No memory allocation is done by that function. It
+// just consists in mapping a Go object too a C one.
 func ByteSlice(pointer unsafe.Pointer, size int) []byte {
 	var s []byte