6ar: exit with error status if files cannot be opened.
6ar: exit with error status if files cannot be opened.

R=r
DELTA=15  (8 added, 0 deleted, 7 changed)
OCL=15952
CL=15954

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go