Fixes #5803. Reworked jsonp prefilter so that it sets the dataType as jsonp and recognizes requests with originalSettings having jsonp or jsonpCallback to be jsonp. Moved default jsonp option value into ajaxSettings. Attached the transport to "jsonp" which avoids unnecessary testing. Transport factory sets dataType back to json for proper data conversion.
Fixes #5803. Reworked jsonp prefilter so that it sets the dataType as jsonp and recognizes requests with originalSettings having jsonp or jsonpCallback to be jsonp. Moved default jsonp option value into ajaxSettings. Attached the transport to "jsonp" which avoids unnecessary testing. Transport factory sets dataType back to json for proper data conversion.

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