Merge pull request #863 from rspec/use_git_repos

Similar to the other rspec repos, allow suppression of local repos

Author: JonRowe

Gemfile

@@ -4,7 +4,7 @@ gemspec
 
 %w[rspec rspec-core rspec-expectations rspec-mocks rspec-collection_matchers rspec-support].each do |lib|
   library_path = File.expand_path("../../#{lib}", __FILE__)
-  if File.exist?(library_path)
+  if File.exist?(library_path) && !ENV['USE_GIT_REPOS']
     gem lib, :path => library_path
   else
     gem lib, :git => "git://github.com/rspec/#{lib}.git"