+Tue Jun 6 18:46:26 2006 Ben Pfaff <blp@gnu.org>
+
+ Implement random access to casefiles, for use in GUI.
+
+ * casefile.c: (struct casereader) Add `random', `file_ofs',
+ `buffer_ofs' members.
+ (casefile_get_random_reader) New function.
+ (read_open_file) Break part into new function
+ seek_and_fill_buffer().
+ (fill_buffer) Update buffer_ofs, file_ofs.
+ (casereader_seek) New function.
+