make-snapshot: remove unused files

* tool/make-snapshot (package): remove working directories and
  unused files.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49358 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/make-snapshot

@@ -311,6 +311,16 @@ def package(vcs, rev, destdir, tmp = nil)
     end
     vcs.after_export(".") if exported
     FileUtils.rm_rf(clean)
+    FileUtils.rm_rf(".downloaded-cache")
+    if File.exist?("gems/bundled_gems")
+      gems = Dir.glob("gems/*.gem")
+      gems -= File.readlines("gems/bundled_gems").map {|line|
+        'gems/'+line.split(' ').join('-')+'.gem'
+      }
+      FileUtils.rm_f(gems)
+    else
+      FileUtils.rm_rf("gems")
+    end
     unless $?.success?
       puts " failed"
       return