I'm less certain that these are unneeded because networking APIs seem to have more variation between platforms, but it's better to remove the cruft and then add back whatever headers $PLATFORM users complain about, than to not remove the cruft at all...
This commit adds a set of package-visible structs and functions to allow delegating announces and scrapes to different protocol handlers. (Examples: struct tr_announce_request, struct tr_announce_response, struct tr_scrape_request, struct tr_scrape_response.) HTTP is the only protocol handler currently implemented; however, this provides a clean API for other protocol handlers, and having this in trunk will help shake out any bugs in this refactoring.
In addition, logging via the TR_DEBUG_FD environment variable is vastly improved in the announcer module now.
The Berne Convention says that the copyright year is moot, so instead of adding another year to each file as in previous years, I've removed the year altogether from the source code comments in libtransmission, gtk, qt, utils, daemon, and cli.
Juliusz's copyright notice in tr-dht and Johannes' copyright notice in tr-lpd have been left alone; it didn't seem appropriate to modify them.
