Increase error message output in boot.rb

I received a message stating that rails was not installed. It was:

[wwalker@silver ~]$ list_processor Missing the Rails 2.2.2 gem. Please gem install -v=2.2.2 rails, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.
[wwalker@silver ~]$ gem list rails

LOCAL GEMS

rails (2.2.2)

I spent about 2 hours trying to sort this out. Finally I added one line
to boot.rb (after adding debug code a multitude of other places, and running strace, etc.):

[wwalker@silver ~] diff --git a/config/boot.rb b/config/boot.rb index 6a30b54..e0c6e29 100644
--- a/config/boot.rb +++ b/config/boot.rb @@ -62,6 +62,7 @@ module Rails

   end
 rescue Gem::LoadError => load_error
   $stderr.puts %(Missing the Rails #{version} gem. Please `gem install -v=#{version} rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.)

• $stderr.puts load_error exit 1 end

This immediately told me that rails 2.2.2 would not load because
activesupport 2.3.2 was already active. That is my problem to solve,
but this one extra line of output would shorten the troubleshooting phase
for a lot of people when they have a problem loading rails although it
is installed.