Use common build_package_ree_installer

Author: Paul Rosania

share/ruby-build/ree-1.8.6-20090610

@@ -1,16 +1,3 @@
-build_package_ree_installer() {
-  local options=""
-  if [[ "Darwin" = "$(uname)" ]]; then
-    options="--no-tcmalloc"
-  fi
-
-  # Work around install_useful_libraries crash with --dont-install-useful-gems
-  mkdir -p "$PREFIX_PATH/lib/ruby/gems/1.8/gems"
-
-  { ./installer --auto "$PREFIX_PATH" --dont-install-useful-gems $options
-  } >&4 2>&1
-}
-
 use_gcc42_on_lion
 install_package "ruby-enterprise-1.8.6-20090610" "http://files.rubyforge.vm.bytemark.co.uk/emm-ruby/ruby-enterprise-1.8.6-20090610.tar.gz" ree_installer
 install_package "rubygems-1.4.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.4.2.tgz" ruby