The situation in this thime is, RaspberryPi is now enough supported in OpenWRT. It is easy to build a image and i think this page is not longer in use. I will delete it some times.
Features:
Luci, nano, hostap, wpa_suplicant, olsrd, babeld, batmand, batman-adv, bmx6, bmxd, relayd ngircd, mini-sendmail, ssmtp,
ath9k, carl9170, zd1201, rt2500, rt2800, rt2x00, rt73, rtl8187, zd1211
This Files are build from OpenWRT-Trunk state 12.07.2013. The Files are based on GPL.