describe each interface test

R=r
DELTA=20  (20 added, 0 deleted, 0 changed)
OCL=28707
CL=28716
diff --git a/test/interface8.go b/test/interface8.go
index f7dc04d..4c2d4d4 100644
--- a/test/interface8.go
+++ b/test/interface8.go
@@ -4,6 +4,9 @@
 
 // $G $F.go && $L $F.$A && ./$A.out
 
+// Implicit methods for embedded types.
+// Mixed pointer and non-pointer receivers.
+
 package main
 
 type T int