Removing gemspec and giving up on github gems for now

- the fact that rubygems sees dchelimsky-rspec and rspec as separate gem
  lines is causing users trouble when they have both installed in the
  same system.
- there is a proposal for rubygems to resolve this, so if/when it is
  resolved we can revisit this

Manifest.txt

@@ -188,7 +188,6 @@ resources/spec/simple_spec.rb
 resources/test/spec_and_test_together.rb
 resources/test/spec_including_test_but_not_unit.rb
 resources/test/test_case_with_should_methods.rb
-rspec.gemspec
 spec/README.jruby
 spec/autotest/autotest_helper.rb
 spec/autotest/autotest_matchers.rb

Rakefile

@@ -98,11 +98,6 @@ namespace :update do
   task :manifest do
     system %q[touch Manifest.txt; rake check_manifest | grep -v "(in " | patch]
   end
-
-  desc "update the gemspec"
-  task :gemspec do
-    system %q[rake debug_gem | grep -v "(in " | grep -v "else" | grep -v "s.add_dependency(%q<hoe" | grep -v "s.add_dependency(%q<cuc" > `basename \\`pwd\\``.gemspec]
-  end
 end
 
 task :clobber => :clobber_tmp