Included copyright statement into 'main.c'.

src/base/main/main.c

+/*////////////////////////////////////////////////////////////////////////////
+
+ABC: System for Sequential Synthesis and Verification
+
+http://www.eecs.berkeley.edu/~alanmi/abc/
+
+Copyright (c) The Regents of the University of California. All rights reserved.
+
+Permission is hereby granted, without written agreement and without license or
+royalty fees, to use, copy, modify, and distribute this software and its
+documentation for any purpose, provided that the above copyright notice and
+the following two paragraphs appear in all copies of this software.
+
+IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
+THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
+CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS,
+AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
+SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+////////////////////////////////////////////////////////////////////////////*/
+
 /**CFile****************************************************************
 
   FileName    [main.c]
@@ -18,6 +44,7 @@
 
 ***********************************************************************/
 
+
 #ifdef ABC_PYTHON_EMBED
 #include <Python.h>
 #endif /* ABC_PYTHON_EMBED */