The change to vmdir/rpcserv.c allows "foreign domain" Kerberos principals
to be stored in vmdir. The idea is to always generate a DN which is under
the cn=users,dc=vsphere,dc=local (assuming vdcpromo was -d VSPHERE.LOCAL).
Example for a cross-realm object:
  cn=krbtgt/LOCAL@FOREIGN,cn=users,dc=vsphere,dc=local.
The UPN will still be krbtgt/LOCAL@FOREIGN, and vmkdc will still be able
to find this object.

Backport work already functioning in project-lightwave for
cross-realm authentication to lotus/main.

cross-realm-install.sh is more relevant to deploying on photon, and probably
not much use in lotus/main.

Variable declarations were missing after applying the lotus/main
patch for rpcserv.c.

Patch applied to project-lightwave, but that was
deleted. This change is essential for storing
foreign domain principal attributes in vmdir.

Ported vmdns to lightwave build system. Inital commit.
of this project into git.