Merge tag 'upstream/1.1_hg20130323' into debian-sid

Upstream version 1.1~hg20130323
update version.patch
update changelog
add debian/watch
don’t ship empty /usr/share/go/src in golang-go
update lintian-overrides
remove empty /usr/share/go from golang-go
Merge tag 'upstream/1.1_hg20130405' into debian-sid

Upstream version 1.1~hg20130405
update changelog
bump version
Provide a new hg tip snapshot Go 1.1 beta2.
Patching VERSION collided now
Update changelog for 3:1.1~beta2-1 release