Log Message:
(1) patches/patch-BATCH-SORT
Add function coding-system-from-name to convert data type
-                          in_file_coding_system)
+ (coding-system-from-name in_file_coding_system))

(2) patches/patch-etc_Makfile.in
  Makefile.in may not be generated from Makefile.am
  so the patch also

Honestly, it turned out bushu.rev is always EUC-JAPAN,
so the argument for batch-sort-file telling in/out coding 
system may not be necessary for now.