+ * Revision 1.7 1999-05-26 07:49:14 adam
+ * C++ compilation.
+ *
+ * Revision 1.6 1998/03/18 09:23:55 adam
+ * Blocks are stored in chunks on free list - up to factor 2 in speed.
+ * Fixed bug that could occur in block category rearrangemen.
+ *
+ * Revision 1.5 1998/03/16 10:37:24 adam
+ * Added more statistics.
+ *
+ * Revision 1.4 1996/11/08 11:15:28 adam
+ * Number of keys in chain are stored in first block and the function
+ * to retrieve this information, isc_pp_num is implemented.
+ *
+ * Revision 1.3 1996/11/04 14:08:55 adam