- refactored accept code to automatically setup peers for incoming connections immediately upon connect. previously, this wasn't done until the server called accept, creating a small window of time for peer message events to be lost
 - renamed send_queue to dgram_send_queue just so its purpose is more clear
remove temporary enet fix, and define gethostbyname_r in a header, so that we can be sure at compilation time that it is used in the way it is expected to be (that function has more than one possible signature in various unixes)
Merge pull request #1575 from inolen/accept_fixes

accept fixes