clarify pointer forward decls per ian's suggestion
clarify pointer forward decls per ian's suggestion

R=r
DELTA=13  (3 added, 7 deleted, 3 changed)
OCL=14406
CL=14406

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