Fixed #2174 by removing the s.dataType == "json" check for possible cross domain...

Fixed #2174 by removing the s.dataType == "json" check for possible cross domain since it causes absolute urls to use a <script> tag ajax retrieval even though absolute urls work fine for retrieving local data.  Cross-domain jsonp will still work since the $.ajax() function actually changes the s.dataType to "script" before it reaches this check in cases where it is s.dataType == "jsonp" or s.dataType == "json" and a parameter has =? in it.