Use omit instead of skip for test-unit

Author: hsbt

test/open-uri/test_open-uri.rb

@@ -903,8 +903,8 @@ def test_ftp_over_http_proxy_auth
   end
 
   def test_meta_init_doesnt_bump_global_constant_state
-    skip "RubyVM.stat not defined" unless defined? RubyVM.stat
-    skip unless RubyVM.stat.has_key?(:global_constant_state)
+    omit "RubyVM.stat not defined" unless defined? RubyVM.stat
+    omit unless RubyVM.stat.has_key?(:global_constant_state)
 
     OpenURI::Meta.init(Object.new) # prewarm