prepare for new bird

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22137 52c4871e-980c-0410-b1e0-e73912ce01f8
update bird 1.3.11

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22138 52c4871e-980c-0410-b1e0-e73912ce01f8
update make rules and fix compile error in client.c

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22139 52c4871e-980c-0410-b1e0-e73912ce01f8
correct calculation of wired clients, thx basmaf

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22140 52c4871e-980c-0410-b1e0-e73912ce01f8
add msissing file

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22141 52c4871e-980c-0410-b1e0-e73912ce01f8