Make URL parser more dynamic
Add build-in http client

- supports SSL
- supports location redirections
- supports chunked data transfers
- supports HTTP/1.0 HTTP/1.1 and RTSP/1.0
Move RTSP common code from SAT>IP to the common place
Rewrite imagecache to use build-in http client (remove curl)

- add the basic SSL peer certificate verification
IPTV: tune the http client settings

- increase the chunk size to 128KB
- allow HTTP redirects