On the 1.8.x branch:

* subversion/po/zh_CN.po,
  subversion/po/zh_TW.po: Set Language to fix warnings with gettext >=0.19.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x@1618437 13f79535-47bb-0310-9956-ffa450edef68