rxkad: Update ticket5 from heimdal
This updates the rxkad code that we pull from heimdal to heimdal 7.7.0
(heimdal.git commit
e1959605bd). This also updates the instructions in
README.v5 to accommodate changes in the heimdal tree, and converts
ticket5.c to use KRB5_ENCTYPE_* constants instead of ETYPE_*
constants (since heimdal has also similarly converted in krb5_asn1.h).
This removes a few -Werror=format-truncation warnings that were
present in the heimdal code before this commit.
README.v5 tweaked in collaboration with kaduk@mit.edu.
Change-Id: I5fdaab600b4a1b42658a60259fde3fc9f7dced04
Reviewed-on: https://gerrit.openafs.org/13287
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>