bug in shift of longer operand by a shorter operand. the bits in the difference were not cheared.
bug in shift of longer operand
by a shorter operand. the bits
in the difference were not cheared.

R=r
OCL=27705
CL=27705

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