ar7-2.4 cleanup - Switch to generic init scripts (/sbin/mount_root,...

ar7-2.4 cleanup - Switch to generic init scripts (/sbin/mount_root, /bin/firstboot, /etc/preinit), failsafe part moved to /etc/preinit.arch. This should fix #1449 with an added benefit of using mini_fo. - Switch to generic /etc/config/network. - ar7 flashmap: change "OpenWrt" to "rootfs_data", move ar7_mtd_cleanup out of .exit.

SVN-Revision: 6604