git ls-files
* tool/rbinstall.rb (load_gemspec): purge `git ls-files` generated by bundle. it is not available always everywhere everytime. [ruby-dev:50068] [Bug #13423] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58327 b2dd03c8-39d4-4d8f-98ff-823fe69b080e