doc/go1.2.txt: flag now exports CommandLine

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/12642043

doc/go1.2.txt

@@ -19,6 +19,7 @@ crypto/sha512: Sum512 and Sum384 functions to simplify hashing (CL 10630043).
 crypto/tls: add support for TLS 1.1. (CL 7872043).
 encoding/json: accept but correct invalid UTF-8 in Marshal (CL 11211045).
 flag: add Getter interface (CL 10472043).
+flag: export commandLine (now CommandLine) (CL 12587043).
 fmt: indexed access to arguments in Printf etc. (CL 9680043).
 go/build: support including C++ code with cgo (CL 8248043).
 image/draw: added Drawer, FloydSteinberg and the op.Draw method (CL 10977043).