(main): Call put_entries here even in CTAGS mode.
(main, process_file): Check the return values of fclose and pclose.
(process_file): Do not call put_entries after parsing each file.
- (process_file): Canonicalise file names even for ctags.
+ (process_file): Canonicalize file names even for ctags.
(process_file): Set curfile here...
(find_entries): ... not here any more.
(add_node): In etags mode, build a linked list of entries (on