Fix creation/rename of top-level profile sections

profile_rename_section should demand only one name.

profile_add_relation should demand only one name if it is creating a
new section.  It aso needs to reset state before calling
profile_find_node for the section, in case it didn't look up any
parent sections previously.

(cherry picked from commit 590df2f41f84e0f9492e08f7dbd26fbcd3118ea0)

https://github.com/krb5/krb5/commit/b1b5c398b54b834ede69162303134d7511cb3c08
Author: Greg Hudson <ghudson@mit.edu>
Committer: Tom Yu <tlyu@mit.edu>
Commit: b1b5c398b54b834ede69162303134d7511cb3c08
Branch: krb5-1.11
 src/util/profile/prof_set.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)