MEDIUM: config: replace ssl_conf by bind_conf

Some settings need to be merged per-bind config line and are not necessarily
SSL-specific. It becomes quite inconvenient to have this ssl_conf SSL-specific,
so let's replace it with something more generic.
diff --git a/include/types/listener.h b/include/types/listener.h
index 78195ec..0985329 100644
--- a/include/types/listener.h
+++ b/include/types/listener.h
@@ -93,8 +93,8 @@
  * maxconn setting to the global.maxsock value so that its resources are reserved.
  */
 
-/* "bind" line SSL settings */
-struct ssl_conf {
+/* "bind" line settings */
+struct bind_conf {
 #ifdef USE_OPENSSL
 	char *ciphers;             /* cipher suite to use if non-null */
 	int nosslv3;               /* disable SSLv3 */
@@ -104,7 +104,7 @@
 	struct eb_root sni_ctx;    /* sni_ctx tree of all known certs full-names sorted by name */
 	struct eb_root sni_w_ctx;  /* sni_ctx tree of all known certs wildcards sorted by name */
 #endif
-	int ref_cnt;               /* number of users of this config, maybe 0 on error */
+	int is_ssl;                /* SSL is required for these listeners */
 	struct list by_fe;         /* next binding for the same frontend, or NULL */
 	char *arg;                 /* argument passed to "bind" for better error reporting */
 	char *file;                /* file where the section appears */
@@ -147,7 +147,7 @@
 	char *interface;		/* interface name or NULL */
 	int maxseg;			/* for TCP, advertised MSS */
 
-	struct ssl_conf *ssl_conf;	/* SSL settings, otherwise NULL */
+	struct bind_conf *bind_conf;	/* "bind" line settings, include SSL settings among other things */
 
 	/* warning: this struct is huge, keep it at the bottom */
 	struct sockaddr_storage addr;	/* the address we listen to */
diff --git a/include/types/proxy.h b/include/types/proxy.h
index a2355d5..dde002a 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -360,7 +360,7 @@
 		struct eb32_node id;		/* place in the tree of used IDs */
 		struct eb_root used_listener_id;/* list of listener IDs in use */
 		struct eb_root used_server_id;	/* list of server IDs in use */
-		struct list ssl_bind;		/* list of SSL bind settings */
+		struct list bind;		/* list of bind settings */
 	} conf;					/* config information */
 	void *parent;				/* parent of the proxy when applicable */
 };