api: update go1.txt after adding functions to html/template Fixes build, teaches lesson.
api: update go1.txt after adding functions to html/template
Fixes build, teaches lesson.

R=golang-dev, r
TBR=bradfitz
CC=golang-dev
http://codereview.appspot.com/5853051

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