* amd/sun_map.c (sun_append_str): When translating '&' from Sun

* amd/sun_map.c (sun_append_str): When translating '&' from Sun
automounter maps, replace it with "${key}" in the Amd map, not
with the value of the key at the time.  This way '*' maps work
too.

* config.guess.long: don't use -q option to grep because some
systems don't support it.  Bug fix for solaris.

* amd/opts.c (expand_op): Don't call xstrlcpy() to truncate a
string.  It causes spurious xstrlcpy() syslog() errors.  Use
memcpy() and explicitly terminate the string.