test of struct with embedded interface. also tests method calls on ptr to interface value.
test of struct with embedded interface.
also tests method calls on ptr to interface value.

R=r
DELTA=74  (74 added, 0 deleted, 0 changed)
OCL=28419
CL=28424

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