Adopt to my Mac OS X environment.

- fix : .zshenv did not work on perlbrew 0.62.
- fix : .zshrc "ls" alias did not work on macosx.
- fix : .zshrc "less" alias did not work on macosx.
- delete unused emacs conf / elisp / etc.
  - anything.el
  - html-tt.el
- modify : move .emacs to .emacs.d/init.el.
- modify : .emacs switch im from uim to mozc.
- modify : .emacs disable auto-save function.
- modify : .emacs disable mozc.el if it doesn't exist.
- add : .emacs install packages using package.el.
.emacs.d : Modify incompatibility code for emacs 24.