+ * Revision 1.5 1997-09-05 15:30:00 adam
+ * Changed prototype for chr_map_input - added const.
+ * Added support for C++, headers uses extern "C" for public definitions.
+ *
+ * Revision 1.4 1996/11/08 11:08:01 adam
+ * New internal release.
+ *
+ * Revision 1.3 1996/11/01 13:35:03 adam
+ * New element, max_blocks_mem, that control how many blocks of max size
+ * to store in memory during isc_merge.
+ *
+ * Revision 1.2 1996/10/29 16:44:42 adam
+ * Added isc_type, isc_block macros.
+ *
+ * Revision 1.1 1996/10/29 13:40:37 adam