merge revision(s) 46060: [Backport #9627]

	* net/protocol.rb (using_each_crlf_line): fix SMTP dot-stuffing
	  for messages not ending with a new-line.
	  [ruby-core:61441] [Bug #9627] [fix GH-616]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@46515 b2dd03c8-39d4-4d8f-98ff-823fe69b080e