buildserver: move apt setup to a shell script

This makes it so there is only a single `apt-get install` command run,
instead of one command per-package like with the chef script.  It also adds
`apt-get upgrade` to make sure that the base box is fully up-to-date.

buildserver/cookbooks/fdroidbuild-general/recipes/default.rb

@@ -1,120 +1,5 @@
 
-user = node[:settings][:user]
-debian_mirror = node[:settings][:debian_mirror]
-
-execute 'set_debian_mirror' do
-  command "sed -i 's,http://ftp.uk.debian.org/debian/,#{debian_mirror},g' /etc/apt/sources.list"
-end
-
-execute "jessie_backports" do
-  command "echo 'deb #{debian_mirror} jessie-backports main' > /etc/apt/sources.list.d/backports.list"
-  only_if "grep jessie /etc/apt/sources.list"
-end
-
-if node['kernel']['machine'] == "x86_64"
-  execute "archi386" do
-    command "dpkg --add-architecture i386"
-  end
-end
-
-execute "apt-get-update" do
-  command "apt-get update"
-end
-
-%w{
-    ant
-    ant-contrib
-    autoconf
-    autoconf2.13
-    automake1.11
-    autopoint
-    bison
-    bzr
-    cmake
-    curl
-    expect
-    faketime
-    flex
-    gettext
-    git-core
-    git-svn
-    gperf
-    graphviz
-    imagemagick
-    inkscape
-    javacc
-    libarchive-zip-perl
-    libexpat1-dev
-    libglib2.0-dev
-    liblzma-dev
-    librsvg2-bin
-    libsaxonb-java
-    libssl-dev
-    libssl1.0.0
-    libtool
-    libtool-bin
-    make
-    maven
-  }.each do |pkg|
-  package pkg do
-    action :install
-  end
-end
-
-%w{
-    mercurial
-    nasm
-    openjdk-8-jdk-headless
-    optipng
-    p7zip
-    pandoc
-    perlmagick
-    pkg-config
-    python-gnupg
-    python-magic
-    python-setuptools
-    python3-gnupg
-    python3-requests
-    python3-yaml
-    qt5-default
-    qtbase5-dev
-    quilt
-    realpath
-    scons
-    subversion
-    swig
-    texinfo
-    transfig
-    unzip
-    vorbis-tools
-    xsltproc
-    yasm
-    zip
-  }.each do |pkg|
-  package pkg do
-    action :install
-  end
-end
-
-if node['kernel']['machine'] == "x86_64"
-  %w{libstdc++6:i386 libgcc1:i386 zlib1g:i386 libncurses5:i386}.each do |pkg|
-    package pkg do
-      action :install
-    end
-  end
-end
-
 easy_install_package "compare-locales" do
   options "-U"
   action :install
 end
-
-if node['kernel']['machine'] == "x86_64"
-  execute "set-default-java" do
-    command "update-java-alternatives --set java-1.8.0-openjdk-amd64"
-  end
-else
-  execute "set-default-java" do
-    command "update-java-alternatives --set java-1.8.0-openjdk-i386"
-  end
-end