Add KRB4 and DIR_hdbdir to the FEATURE_DEFS list
Add KRB4 and DIR_hdbdir to the FEATURE_DEFS list

Add version.h and heim_threads.h to the list of include files.

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal