+ * Revision 1.3 2000/07/29 17:03:31 mdw
+ * Add support for left-to-right bitscanning, for use in modular
+ * exponentiation.
+ *
+ * Revision 1.2 2000/06/17 11:45:09 mdw
+ * Major memory management overhaul. Added arena support. Use the secure
+ * arena for secret integers. Replace and improve the MP management macros
+ * (e.g., replace MP_MODIFY by MP_DEST).
+ *