* lib/rubygems/ext/builder.rb (Gem::Ext::Builder.make): Remove
  .time dependency from *.rb install target. It causes needless
  *.rb install. [Bug #7698] [ruby-core:51437]
  Reported by Tadashi Saito. Thanks!!!
* test/rubygems/test_gem_installer.rb
  (TestGemInstaller#test_install_extension_and_script): Add a test
  for the above change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38864 b2dd03c8-39d4-4d8f-98ff-823fe69b080e