godoc: use int64 for timestamps
godoc: use int64 for timestamps

This fixes a crash seen when viewing a directory list.

Fixes issue 747.

R=gri
CC=golang-dev, rsc
http://codereview.appspot.com/1010042

Committer: Robert Griesemer <a6752097faebf1f02d80107d77a9be009089afe3@golang.org>

pombredanne/go-deleteme,bdwalton/debian-golang,apparentlymart/golang,ssrl/go,nightlyone/golang,ssrl/go,tv42/old-go,bdwalton/debian-golang,tv42/old-go,dsriram/golang,dsriram/golang,nightlyone/golang,dsriram/golang,dsriram/golang,nightlyone/golang,bdwalton/debian-golang,pombredanne/go-deleteme,ssrl/go,pombredanne/go-deleteme,tianon/debian-golang,bdwalton/debian-golang,gnanderson/go,tv42/old-go,apparentlymart/golang,bdwalton/debian-golang,tianon/debian-golang,bdwalton/debian-golang,h8liu/golang,bdwalton/debian-golang,dsriram/golang,bdwalton/debian-golang,tv42/old-go,apparentlymart/golang,gnanderson/go,gnanderson/go,tianon/debian-golang,tv42/old-go,apparentlymart/golang,tianon/debian-golang,apparentlymart/golang,h8liu/golang,tv42/old-go,tianon/debian-golang,apparentlymart/golang,h8liu/golang,pombredanne/go-deleteme,tianon/debian-golang,tianon/debian-golang,gnanderson/go,h8liu/golang,pombredanne/go-deleteme,dsriram/golang,h8liu/golang,nightlyone/golang,nightlyone/golang,nightlyone/golang,tv42/old-go,nightlyone/golang,ssrl/go,pombredanne/go-deleteme,tianon/debian-golang,gnanderson/go,h8liu/golang,gnanderson/go,apparentlymart/golang,pombredanne/go-deleteme,ssrl/go,h8liu/golang,gnanderson/go,dsriram/golang,ssrl/go,ssrl/go