on a socket.
I also added a wrapper function around strerror() for dgets_errno, since
we did the same thing in a few places. This all needs to be cleaned up
a little - the -1 value we use could in theory clash with an actual
errno error number.
git-svn-id: svn://svn.code.sf.net/p/bitchx/code/trunk@104 13b04d17-f746-0410-82c6-800466cd88b0