merge revision(s) 40574:

	* doc/security.rdoc: Add note about reporting security vulns


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40576 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-05-05

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40577 b2dd03c8-39d4-4d8f-98ff-823fe69b080e