Bug#667699: apt: Apt GPG errors with HTTPS requests including Range headers

[Adrian Caval <adrian@swiftwill.com>]

Hello, I realized I did not cover all angles in my last log.

In this iteration I am forcing Lighttpd to set Last-Modified headers for 
files without extensions, with all no-cache settings from previous case 
removed on both sides.

Here is what Release returns now: 

$ curl -I https://deb.domain.com/dists/squeeze/Release
HTTP/1.1 200 OK
Content-Type: application/octet-stream
Accept-Ranges: bytes
ETag: "1447745436"
Last-Modified: Thu, 05 Apr 2012 20:41:42 GMT
Content-Length: 3036
Date: Thu, 05 Apr 2012 23:30:45 GMT


With APT receiving a 416: 

* About to connect() to deb.domain.com port 443 (#0)
*   Trying 111.111.111.111... * connected
* Connected to deb.domain.com (111.111.111.111) port 443 (#0)
* found 141 certificates in /etc/ssl/certs/ca-certificates.crt
* SSL re-using session ID
*        server certificate verification OK
*        common name: *.domain.com (matched)
*        server certificate expiration date OK
*        server certificate activation date OK
*        certificate public key: RSA
*        certificate version: #3
*        subject: serialNumber=ad6c57sfKqXkXIhW0z7vi8OkT/Z62ORi,C=US,ST=NewYork,L=NewYork,O=Domain Inc\, Inc.,OU=SSL Services,CN=*.domain.com
*        start date: Wed, 15 Feb 2012 15:54:10 GMT
*        expire date: Tue, 19 Mar 2013 00:17:25 GMT
*        issuer: C=US,O=GeoTrust\, Inc.,CN=GeoTrust SSL CA
*        compression: NULL
*        cipher: AES-128-CBC
*        MAC: SHA1
> GET /dists/squeeze/Release HTTP/1.1
User-Agent: 1_99dbb35850fbb8668f2a3b27a6d97c75ab0bb58d
Host: deb.domain.com
Accept: */*
Cache-Control: max-age=0
Range: bytes=63739-
If-Range: Thu, 05 Apr 2012 20:41:42 GMT

* The requested URL returned error: 416
* Closing connection #0