File header cleanup.

 * sysdeps.h should always be included first.
 * TRACE_TAG needs to be defined before anything is included.
 * Some files were missing copyright headers.
 * Save precious bytes on my SSD by removing useless whitespace.

Change-Id: I88980e6e00b5be1093806cf286740d9e4a033b94
diff --git a/adb/usb_osx.c b/adb/usb_osx.c
index aa7e1ea..94c8cfe 100644
--- a/adb/usb_osx.c
+++ b/adb/usb_osx.c
@@ -14,6 +14,10 @@
  * limitations under the License.
  */
 
+#define TRACE_TAG TRACE_USB
+
+#include "sysdeps.h"
+
 #include <CoreFoundation/CoreFoundation.h>
 
 #include <IOKit/IOKitLib.h>
@@ -24,9 +28,6 @@
 
 #include <stdio.h>
 
-#include "sysdeps.h"
-
-#define TRACE_TAG   TRACE_USB
 #include "adb.h"
 #include "transport.h"