Here is a private mirror for mozc* on AUR.
https://aur.archlinux.org/packages.php?K=mozc

* ken_all*, jigyosho*
  Japanese zip code archives
  http://www.post.japanpost.jp/zipcode/download.html
  License: Public Domain

* x-ken-all*
  Modified Japanese zip code archives by Ibs
  http://zipcloud.ibsnet.co.jp/
  Licemse: Public Domain

* uim-mozc-*
  uim-mozc plugin
  http://code.google.com/p/macuim/
  License: New BSD

* mozcdic-ut-*
  Mozc UT dictionary
  http://www.geocities.jp/ep3797/mozc_01.html
  License: GPL, CC-BY-SA, etc.

* edict-*
  EDICT Dictionary File (snapshot)
  http://www.csse.monash.edu.au/~jwb/edict.html
  License: CC-BY-SA

* gyp-*
  GYP (Generate Your Projects) 
  http://code.google.com/p/gyp/
  License: New BSD

These resources fall into one of the followings on the upstream:
- Not versioned and replaced by a new version with the same name.
- Not retained older versions.
- Not provided sources as tarballs.