+2007-11-03 Ben Pfaff <blp@gnu.org>
+
+ Allow output files to overwrite input files (bug #21280).
+
+ * aggregate.c (cmd_aggregate): Manage file handle reference
+ counts.
+
+ * correlations.q (internal_cmd_frequencies): Ditto.
+ (cor_custom_matrix): Ditto.
+
+ * regression.q (regression_custom_export): Ditto.
+ (cmd_regression): Ditto.
+
2007-10-12 Ben Pfaff <blp@gnu.org>
* flip.c (flip_file): No need to conditionally substitute for