[pkg-go] Recommended packages in golang-go binary

[Potter, Tim (Converged Cloud)]

Hi everyone.  I’m just going some testing with the experimental version of Go that’s
currently in the archive (thanks tianon!).  I notice that installing golang-go pulls in a 
whole bunch of perl modules, as well as gcc and g++.  Is this really necessary in the 
new era of self-hosted Go?  Can we at least move the current recommended packages 
to suggested?

Here’s the relevant piece, in case you don’t a repo handy:

>Package: golang-go
>Architecture: amd64 arm64 armel armhf i386 ppc64 ppc64el
>Depends: golang-src (>= ${source:Version}),
>         ${misc:Depends},
>         ${perl:Depends},
>         ${shlibs:Depends}
>Replaces: <stuff>
>Recommends: g++, gcc, libc6-dev, pkg-config
>Suggests: bzr, ca-certificates, git, golang-golang-x-tools, mercurial, subversion
>Description: Go programming language compiler, linker, compiled stdlib


Tim.