Log Message:
The "missing-from-system" headers that Heimdal installs are now placed
into ${PREFIX}/include/krb5/roken instead of ${PREFIX}/include/krb5.
This is good because it reduces the likelihood of a conflict with any
other similarly named headers if you simply add -I${PREFIX}/include/krb5
to the compiler command line.

Patch from PR pkg/38119 by charlie.