make.bat: remove double quotes
make.bat: remove double quotes

Fixes issue 2974.

R=golang-dev, r, rsc
CC=golang-dev
http://codereview.appspot.com/5653052

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