bundles: store no/default/pipeline/multiplex

to allow code to act differently on the situation.

Also added some more info message for the connection re-use function to
make it clearer when connections are not re-used.

lib/http2.c

@@ -32,7 +32,7 @@
 #include "curl_base64.h"
 #include "rawstr.h"
 #include "multiif.h"
-#include "bundles.h"
+#include "conncache.h"
 
 /* The last #include files should be: */
 #include "curl_memory.h"
@@ -1196,7 +1196,7 @@ CURLcode Curl_http2_setup(struct connectdata *conn)
 
   conn->bits.multiplex = TRUE; /* at least potentially multiplexed */
   conn->httpversion = 20;
-  conn->bundle->server_supports_pipelining = TRUE;
+  conn->bundle->multiuse = BUNDLE_MULTIPLEX;
 
   return CURLE_OK;
 }