Delete bcm47xx-switch
Delete hostapd script

hostapd has been removed from the CLFS embedded book.
Delete bridge script
Makefile: Remove dist target

We can get a tarball from the git web interface, as is done today in
CLFS embedded book.
Delete network script

We'll use a daemon like ifplugd or netplug to bring the network up or
down on cable detecte/removal.  This saves the possible long wait at
power up if dhcp is used and the dhcp server isn't available.
Makefile: fix .PHONY
startup: Fix rtc detection

Real time clocks, especially if there's more than one, will enumerate
starting with /dev/rtc0.  Check for any /dev/rtc* entries NOT /dev/rtc.