merge revision(s) 48997: [Backport #10640]

	* configure.in (NET_LUID): include winsock2.h instead of windows.h.
	  patch by Jon Forums in [ruby-core:67125].  [Bug #10640]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@48998 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
still patch level 0


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@49000 b2dd03c8-39d4-4d8f-98ff-823fe69b080e