CLEANUP: connection: remove all direct references to raw_sock and ssl_sock

Now we exclusively use xprt_get(XPRT_RAW) instead of &raw_sock or
xprt_get(XPRT_SSL) for &ssl_sock. This removes a bunch of #ifdef and
include spread over a number of location including backend, cfgparse,
checks, cli, hlua, log, server and session.
diff --git a/src/cli.c b/src/cli.c
index 4ccc49a..fa45db9 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -62,7 +62,6 @@
 #include <proto/session.h>
 #include <proto/stream.h>
 #include <proto/server.h>
-#include <proto/raw_sock.h>
 #include <proto/stream_interface.h>
 #include <proto/task.h>
 
@@ -215,7 +214,7 @@
 			}
 		}
 
-		bind_conf = bind_conf_alloc(global.stats_fe, file, line, args[2], &raw_sock);
+		bind_conf = bind_conf_alloc(global.stats_fe, file, line, args[2], xprt_get(XPRT_RAW));
 		bind_conf->level = ACCESS_LVL_OPER; /* default access level */
 
 		if (!str2listener(args[2], global.stats_fe, bind_conf, file, line, err)) {