runtime: Correct commonType.kind values to match compiler.
runtime: Correct commonType.kind values to match compiler.

The copy of these values in the reflect package is already
correct.

R=rsc
CC=golang-dev
http://codereview.appspot.com/2009044

dsriram/golang,dsriram/golang,tv42/old-go,tv42/old-go,tv42/old-go,h8liu/golang,ssrl/go,pombredanne/go-deleteme,h8liu/golang,apparentlymart/golang,pombredanne/go-deleteme,gnanderson/go,h8liu/golang,apparentlymart/golang,gnanderson/go,ssrl/go,apparentlymart/golang,apparentlymart/golang,pombredanne/go-deleteme,gnanderson/go,h8liu/golang,pombredanne/go-deleteme,dsriram/golang,tv42/old-go,tv42/old-go,gnanderson/go,pombredanne/go-deleteme,ssrl/go,dsriram/golang,gnanderson/go,h8liu/golang,gnanderson/go,dsriram/golang,apparentlymart/golang,pombredanne/go-deleteme,ssrl/go,ssrl/go,ssrl/go,tv42/old-go,ssrl/go,apparentlymart/golang,dsriram/golang,h8liu/golang,pombredanne/go-deleteme,tv42/old-go,dsriram/golang,apparentlymart/golang,h8liu/golang,gnanderson/go