change the maintainers file

git-svn-id: http://svn.gnome.org/svn/at-spi/trunk@941 e2bd861d-eb25-0410-b326-f6ed22b6b98c

MAINTAINERS

-Bill Haneman     <bill.haneman@sun.com>
-Li Yuan          <li.yuan@sun.com>
+Bill Haneman
+E-mail: bill.haneman@sun.com
+
+Li Yuan
+E-mail: li.yuan@sun.com
+Userid: liyuan