bozo: move more initialization code to functions

bozo: move more initialization code to functions

Move the code to create the initial "localcell" configuration and the
code to get the rx bind address out of main and into separate
functions.

Replace the global array of host addresses used to get the rx bind
address with a local variable.

Replace the call to rx_getAllAddr() with rx_getAllAddrMaskMtu(). The
former is not safe to call before rx_InitHost().

Initialize the cell info structure to zeros when creating the initial
"localcell" configuration.

Change-Id: I756aef86018d0cdd499afa58fdea99a7ac0d99df
Reviewed-on: http://gerrit.openafs.org/11690
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Perry Ruiter <pruiter@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>