exp/locale/collate: Added test flag to maketables tool for comparing newly against previously generated tables.
exp/locale/collate: Added test flag to maketables tool for comparing newly
against previously generated tables.

R=r
CC=golang-dev
http://codereview.appspot.com/6441098

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