More small header changes:

* Remove leading underscores in header preprocessor names
* Regularize names to include directory parts in the file name
* Untabify files
* Update copyright and remove unmaintained cvs $Id$ line

The justification for removing leading underscores comes from a CERTS Secure Coding recommendation: https://www.securecoding.cert.org/confluence/display/cplusplus/DCL32-CPP.+Do+not+declare+or+define+a+reserved+identifier

See also Savannah bug #35745 https://savannah.gnu.org/bugs/?35745

include/cdio/mmc_util.h

@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2010 Rocky Bernstein <rocky@gnu.org>
+    Copyright (C) 2010, 2012 Rocky Bernstein <rocky@gnu.org>
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -22,8 +22,8 @@
    on anything other than headers.
 */
 
-#ifndef __CDIO_MMC_UTIL_H__
-#define __CDIO_MMC_UTIL_H__
+#ifndef CDIO_MMC_UTIL_H_
+#define CDIO_MMC_UTIL_H_
 
 #include <cdio/device.h>
 
@@ -147,7 +147,7 @@ extern "C" {
 }
 #endif /* __cplusplus */
 
-#endif /* __MMC_UTIL_H__ */
+#endif /* CDIO_MMC_UTIL_H_ */
 /* 
  * Local variables:
  *  c-file-style: "gnu"