Log Message:
Update ja-trac to 0.11.4pl1, aka Trac-0.11.4.ja1

Trac-0.11.4.ja1 (Apr 1, 2009)
 * Merge Trac-0.11.4
 * Fixes unicode transcoding for Exception.
   - trac/core.py
   - trac/util/text.py

Trac 0.11.4 (March 30, 2009)
http://svn.edgewall.org/repos/trac/tags/trac-0.11.4

 Trac 0.11.4 contains a number of bug fixes and minor enhancements.
 The following list contains only a few highlights:

 * Custom mainnav links regression (#8153)
 * Fixed Python 2.3 incompatibility (#8061)
 * Fixed Python 2.6 notification issue (#8083)
 * Fixed PostgreSQL multi column index issue (#7600)