null-terminated.
Fixed a wrong if statement which should test a string is
empty where in fact it tested the string pointer was NULL.
Should go to RELENG_2_1 and RELENG_2_2.
Reviewed by guido@freebsd.org.
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
