fix copyright initial year (from G6)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@52701 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/alloc.c

@@ -3,7 +3,7 @@
  *
  * \brief GIS Library - Memory allocation routines.
  *
- * (C) 2001-2009 by the GRASS Development Team
+ * (C) 1999-2009 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.