Fix #6593. Don't trigger `change` event twice when simulating it on IE.
Fix #6593. Don't trigger `change` event twice when simulating it on IE.

eburgos/jquery,jcutrell/jquery,demetr84/Jquery,fat/jquery,rwaldron/jquery,Karyotyper/jquery,sancao2/jquery,gnarf/jquery,hoorayimhelping/jquery,fat/jquery,jcutrell/jquery,eburgos/jquery,chitranshi/jquery,chitranshi/jquery,praveen9102/Shazam,diracdeltas/jquery,jquery/jquery,eburgos/jquery,RubyLouvre/jquery,jquery/jquery,jquery/jquery,diracdeltas/jquery,Karyotyper/jquery,demetr84/Jquery,hoorayimhelping/jquery,roytoo/jquery,rwaldron/jquery,isaacs/jquery,sancao2/jquery,npmcomponent/component-jquery,Karyotyper/jquery,roytoo/jquery,RubyLouvre/jquery,sancao2/jquery,npmcomponent/component-jquery,quiaro/request-agent,dtjm/jquery,diracdeltas/jquery,roytoo/jquery,dtjm/jquery,praveen9102/Shazam,gnarf/jquery,isaacs/jquery