Japanese translation updates.
Japanese translation updates.

* subversion/po/ja.po: Work on fuzzy/untranslated entries added at
  r10678:10697 (i.e. accompanied with enabling gettext support for
  svndumpfilter). Also correct some other translations related to
  svndumpfilter to unify terms.
  Now ja.po has 917 translated messages and 6 untranslated messages at
  r10697 (Emacs PO-mode status: "918t+6u+4o").

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion