merge revision(s) 42421,42422: [Backport #8746]

	* test/webrick/test_cgi.rb (TestWEBrickCGI#{start_cgi_server,test_cgi}):
	  mswin is not only mswin32 but also mswin64.
	  mswin is not only mswin32 but also mswin64. [Bug #8746]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@42589 b2dd03c8-39d4-4d8f-98ff-823fe69b080e