Correct Makefile so that we build during all: and only install for
make install.
If /etc/sysconfig exists source it to get the flags for restarting
named with. If /etc/sysconfig says no named runs, don't try to start one.
Don't attempt to kill anything if we can not find the named.pid file.
Reviewed by: Nickolay N. Dudorov <nnd@gw.itfs.nsk.su>