udhcp Server/Client

Release Notes: There is a laundry list of minor bugfixes, including improved lease logic, a fix for occasional incorrect checksum computation on big endian hosts, improved renew behavior, improved signal handling, and a fix to config file parsing. The source now also integrates nicely with busybox; simply drop it into busybox/networking/udhcp whenever you want to sync.

Release Notes: Various interoperability fixes, a new script hook for when DHCP NAKs are received, and internal changes.

Release Notes: bootp paramater support was added to both the server and the client. The client now adds a vendor id to each request. Pidfile handling is improved and standardized across the client and server. Man pages were added to the client and server.

Release Notes: A new --quit/-q option to quit after a lease is obtained (primarily for initrd), a fix to make the client only listen for raw packets on correct interface, and other small bugfixes for the client were made.

Release Notes: Install rules were added to the Makefile. Client scripts have been simplified into one script and the redundant info file removed. Command line options have been added to the client to control its forking behavior. Also, the server has been modified to force broadcast to broken clients that request unicast (and can't accept it).