Delete color configurations for the diff-mode in 'init.el'.
Configure the Ediff mode.
Delete commented-out lines for CEDET.
Add the 'gtags' package.
Use gtags with auto-complete-mode.
Add the path to the ddskk directory to load-path.
Put a large SKK dictionary.
Install 'ddskk' into ./site-lisp.
Add 'skk-autoloads.el' generated by make.