errno now defined to be *get_errno_ptr()

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@607 42af7a65-404d-4744-a932-0658087f49c3

include/errno.h

@@ -1,7 +1,7 @@
 /************************************************************************
- * errno.h
+ * include/errno.h
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -44,6 +44,10 @@
  * Definitions
  ************************************************************************/
 
+/* Convenience/compatibility definition */
+
+#define errno *get_errno_ptr()
+
 /* Definitions of error numbers and the string that would be
  * returned by strerror().
  */