- added language re: interface compparison using ==, != (seems not controversial)
- added language re: interface compparison using ==, !=
(seems not controversial)

R=r
DELTA=8  (3 added, 2 deleted, 3 changed)
OCL=16940
CL=16940
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go