Provides an interface to easily send hidden files or any arbitrary data to
HTTP clients. HTTP_Download can gain its data from variables, files or
stream resources.

It features:
- Basic caching capabilities
- Basic throttling mechanism
- On-the-fly gzip-compression
- Ranges (partial downloads and resuming)
- Delivery of on-the-fly generated archives through Archive_Tar and Archive_Zip
- Sending of PgSQL LOBs without the need to read all data in prior to sending
