[gnet-dev] last patch

[Ian Peters <itp ximian com>]

I don't know how I convinced myself that last patch would help without
fixing GNET_SOCKET_IOCHANNEL_NEW in gnet-private.h, but it's rather more
difficult with it as a macro to set the encoding in that call.  It's
rather ugly to set the encoding everywhere it's called, though.

Of course, I also forgot people could still be using glib-1.2.

Ian