Change G_LOG_DOMAIN to "libsoup". Remove unused defines.

Change G_LOG_DOMAIN to "libsoup". Remove unused defines.

	* libsoup/Makefile.am (INCLUDES): Change G_LOG_DOMAIN to
	"libsoup". Remove unused defines.

	* libsoup/soup-connection.c: Fix doc comments
	* libsoup/soup-message.c: Likewise
	* libsoup/soup-misc.c: Likewise
	* libsoup/soup-socket.c: Likewise
	* libsoup/soup-uri.c: Likewise

	* libsoup/soup-address.h: Fixes to please gtk-doc
	* libsoup/soup-connection.h: Likewise
	* libsoup/soup-message.h: Likewise
	* libsoup/soup-message-private.h: Likewise
	* libsoup/soup-misc.h: Likewise
	* libsoup/soup-server-auth.h: Likewise
	* libsoup/soup-socket.h: Likewise