OptionalObsoleteFiles: Keep Heimdal files when switching back

Additional files that should not be removed when switching back to
Heimdal.

Fixes:		af2593e321

tools/build/mk/OptionalObsoleteFiles.inc

@@ -5713,12 +5713,10 @@ OLD_FILES+=usr/bin/sclient
 OLD_FILES+=usr/bin/sim_client
 OLD_FILES+=usr/bin/uuclient
 OLD_FILES+=etc/rc.d/kpropd
-OLD_FILES+=usr/include/com_err.h
 OLD_FILES+=usr/include/common.h
 OLD_FILES+=usr/include/edwards25519_fiat.h
 OLD_FILES+=usr/include/edwards25519_tables.h
 OLD_FILES+=usr/include/groups.h
-OLD_FILES+=usr/include/gssapi.h
 OLD_FILES+=usr/include/gssapi/gssapi_ext.h
 OLD_FILES+=usr/include/gssapi/gssapi_oid.h
 OLD_FILES+=usr/include/gssapi/gssapi_alloc.h
@@ -5746,7 +5744,6 @@ OLD_FILES+=usr/include/gssrpc/svc_auth.h
 OLD_FILES+=usr/include/gssrpc/types.h
 OLD_FILES+=usr/include/gssrpc/xdr.h
 OLD_FILES+=usr/include/iana.h
-OLD_FILES+=usr/include/kadm5/admin.h
 OLD_FILES+=usr/include/kadm5/chpass_util_strings.h
 OLD_FILES+=usr/include/kadm5/kadm_err.h
 OLD_FILES+=usr/include/kdb.h
@@ -5760,7 +5757,6 @@ OLD_FILES+=usr/include/krb5/kadm5_hook_plugin.h
 OLD_FILES+=usr/include/krb5/kdcpolicy_plugin.h
 OLD_FILES+=usr/include/krb5/kdcpreauth_plugin.h
 OLD_FILES+=usr/include/krb5/localauth_plugin.h
-OLD_FILES+=usr/include/krb5/locate_plugin.h
 OLD_FILES+=usr/include/krb5/plugin.h
 OLD_FILES+=usr/include/krb5/preauth_plugin.h
 OLD_FILES+=usr/include/krb5/pwqual_plugin.h
@@ -5786,7 +5782,6 @@ OLD_LIBS+=usr/lib/libk5crypto.so.121
 OLD_FILES+=usr/lib/libkadm5clnt_mit.a
 OLD_FILES+=usr/lib/libkadm5clnt_mit.so
 OLD_LIBS+=usr/lib/libkadm5clnt_mit.so.121
-OLD_FILES+=usr/lib/libkadm5srv.so
 OLD_FILES+=usr/lib/libkadm5srv_mit.a
 OLD_FILES+=usr/lib/libkadm5srv_mit.so
 OLD_LIBS+=usr/lib/libkadm5srv_mit.so.121