correct signature generation decision for non-pointer types with methods.
correct signature generation decision
for non-pointer types with methods.

R=r
DELTA=37  (13 added, 14 deleted, 10 changed)
OCL=22217
CL=22219

dsriram/golang,wesolows/golang,gnanderson/go,apparentlymart/golang,tv42/old-go,pombredanne/go-deleteme,nightlyone/golang,wesolows/golang-old,pombredanne/go-deleteme,wesolows/golang-old,ssrl/go,apparentlymart/golang,apparentlymart/golang,wesolows/golang-old,dsriram/golang,tv42/old-go,tianon/debian-golang,dsriram/golang,firebitsbr/golang-old,wesolows/golang-old,bdwalton/debian-golang,gnanderson/go,pombredanne/go-deleteme,gnanderson/go,apparentlymart/golang,nightlyone/golang,nightlyone/golang,apparentlymart/golang,firebitsbr/golang-old,tv42/old-go,h8liu/golang,gnanderson/go,bdwalton/debian-golang,wesolows/golang,ssrl/go,nightlyone/golang,apparentlymart/golang,wesolows/golang-old,tianon/debian-golang,h8liu/golang,apparentlymart/golang,pombredanne/go-deleteme,pombredanne/go-deleteme,gnanderson/go,dsriram/golang,ssrl/go,wesolows/golang,dsriram/golang,tianon/debian-golang,nightlyone/golang,tianon/debian-golang,bdwalton/debian-golang,h8liu/golang,nightlyone/golang,h8liu/golang,tianon/debian-golang,ssrl/go,nightlyone/golang,firebitsbr/golang-old,pombredanne/go-deleteme,tv42/old-go,firebitsbr/golang-old,tianon/debian-golang,wesolows/golang-old,wesolows/golang,tianon/debian-golang,wesolows/golang-old,wesolows/golang,gnanderson/go,gnanderson/go,firebitsbr/golang-old,bdwalton/debian-golang,h8liu/golang,pombredanne/go-deleteme,wesolows/golang,h8liu/golang,bdwalton/debian-golang,dsriram/golang,h8liu/golang,tv42/old-go,tianon/debian-golang,bdwalton/debian-golang,wesolows/golang,tv42/old-go,ssrl/go,ssrl/go,dsriram/golang,bdwalton/debian-golang,firebitsbr/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,ssrl/go,tv42/old-go,bdwalton/debian-golang