Don't use a named pointer type as a receiver type. The

Don't use a named pointer type as a receiver type.  The
current spec forbids it:
    The type specified by the type name is called ``receiver
    base type''.  The receiver base type must be a type
    declared in the current file, and it must not be a pointer
    type.

R=r
DELTA=2  (0 added, 0 deleted, 2 changed)
OCL=18527
CL=18541