add buid files to .ignore
add buid files to .ignore


Former-commit-id: 46eeac0aa7b94b1ca1236d8c620891623a481900 [formerly b4d34642ec30338c3c246c488a777723b92bf4c1]
Former-commit-id: d54c7ce919326d64c537b4e446baa08ed8365cfa
cthorey/pdsimage