exp/terminal: add to level Makefile for the (non-Linux?) systems that need it.
exp/terminal: add to level Makefile for the (non-Linux?) systems that need it.

R=golang-dev
CC=golang-dev
http://codereview.appspot.com/5528102

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