+ * Revision 1.21 1996-03-22 15:34:18 quinn
+ * Fixed bad reference
+ *
+ * Revision 1.20 1996/03/21 14:50:10 adam
+ * File update uses modify-time instead of change-time.
+ *
+ * Revision 1.19 1996/03/20 16:16:55 quinn
+ * Added diagnostic output
+ *
+ * Revision 1.18 1996/03/19 12:43:27 adam
+ * Bug fix: File update traversal didn't handle trailing slashes correctly.
+ * Bug fix: Update of sub directory groups wasn't handled correctly.
+ *
+ * Revision 1.17 1996/02/12 18:45:17 adam
+ * Changed naming of some functions.
+ *
+ * Revision 1.16 1996/02/05 12:30:02 adam
+ * Logging reduced a bit.
+ * The remaining running time is estimated during register merge.
+ *
+ * Revision 1.15 1995/12/07 17:38:48 adam
+ * Work locking mechanisms for concurrent updates/commit.
+ *
+ * Revision 1.14 1995/12/06 12:41:26 adam
+ * New command 'stat' for the index program.
+ * Filenames can be read from stdin by specifying '-'.
+ * Bug fix/enhancement of the transformation from terms to regular
+ * expressons in the search engine.
+ *
+ * Revision 1.13 1995/11/28 09:09:46 adam
+ * Zebra config renamed.
+ * Use setting 'recordId' to identify record now.
+ * Bug fix in recindex.c: rec_release_blocks was invokeded even
+ * though the blocks were already released.
+ * File traversal properly deletes records when needed.
+ *
+ * Revision 1.12 1995/11/24 11:31:37 adam
+ * Commands add & del read filenames from stdin if source directory is
+ * empty.
+ * Match criteria supports 'constant' strings.
+ *
+ * Revision 1.11 1995/11/22 17:19:19 adam
+ * Record management uses the bfile system.
+ *
+ * Revision 1.10 1995/11/21 15:01:16 adam