code.jquery.com and caching directives

code.jquery.com and caching directives

I noticed when I pulled jquery mobile from code.jquery.com the response came back without any caching directives:

ttp://code.jquery.com/mobile/1.0a4.1/jquery.mobile-1.0a4.1.min.js
HTTP/1.1 200 OK
Accept-Ranges: bytes
Content-Encoding: gzip
Content-Type: application/x-javascript; charset=utf-8
Date: Sat, 09 Apr 2011 05:28:29 GMT
Etag: "a1b9fae-f03d-77aa6880+gzip"
Last-Modified: Thu, 07 Apr 2011 21:05:22 GMT
Server: ECS (ord/57DD)
Vary: Accept-Encoding
X-Cache: HIT
Content-Length: 19240

When I pull jquery from ajax.googleapis though, it is setting caching directives:

http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js
HTTP/1.1 200 OK
Content-Type: text/javascript; charset=UTF-8
Last-Modified: Thu, 24 Feb 2011 22:13:46 GMT
Date: Fri, 08 Apr 2011 16:12:41 GMT
Expires: Sat, 07 Apr 2012 16:12:41 GMT
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
Server: sffe
Content-Encoding: gzip
Cache-Control: public, max-age=31536000
Content-Length: 29804
Age: 47218

Is there any plan to change the code.jquery.com version to allow the browsers to cache the results for a long period of time?  Or, alternatively, is jquery mobile hosted at ajax.googleapis?

Thanks.