Update m17n packages from Gentoo's main tree.

These versions include all (or better) changes that were applied on
ChromiumOS:

 - the X USE flag for m17n-lib controls GUI without the "false" warning
   about --without-gui;
 - m17n-lib also builds in parallel;
 - m17n-contrib no longer depends on m17n-db at build-time and also skips
   the check for m17n-db;
 - m17n-db includes the patch missing upstream.

R=penghuang@chromium.org
BUG=none
TEST=./build_packages and checked content on {x86,arm}-generic, and
upstream Gentoo tests.

Change-Id: I3ab34ee58e5453c93b11e79fbfd2b84fde33f399

Review URL: http://codereview.chromium.org/6717026
7 files changed