add standard header section

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@48667 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.regression.line/main.c

@@ -1,18 +1,21 @@
-/*
- * r.regression
+
+/****************************************************************************
  *
- *   Calculates linear regression from two raster maps: y = a + b*x
- *   Copyright (C) 2010 by the GRASS Development Team
- *   Author(s): original author Dr. Agustin Lobo
- *              Markus Metz (conversion to C for speed)
+ * MODULE:       r.regression.line
+ * 
+ * AUTHOR(S):    Dr. Agustin Lobo
+ *               Markus Metz (conversion to C for speed)
+ * 
+ * PURPOSE:      Calculates linear regression from two raster maps:
+ *               y = a + b*x
+ * 
+ * COPYRIGHT:    (C) 2010 by the GRASS Development Team
  *
- *      This program is free software under the GNU General Public
- *      License (>=v2). Read the file COPYING that comes with GRASS
- *      for details.
+ *               This program is free software under the GNU General Public
+ *               License (>=v2). Read the file COPYING that comes with GRASS
+ *               for details.
  *
- *   This program is a replacement for the r.regression.line script
- *   (the C version is up to 200x faster than the script version)
- */
+ *****************************************************************************/
 
 #include <stdio.h>
 #include <stdlib.h>