print name of mailbox being opened.

src/sync.c

@@ -664,7 +664,7 @@ sync_boxes( store_t *mctx, const char *mname,
 				maxwuid = srec->suid;
 	} else
 		maxwuid = 0;
-	info( "Selecting slave... " );
+	info( "Selecting slave %s... ", sname );
 	debug( "selecting slave [1,%d]\n", maxwuid );
 	switch (sdriver->select( sctx, (sctx->opts & OPEN_OLD) ? 1 : smaxuid + 1, maxwuid, 0, 0 )) {
 	case DRV_STORE_BAD: ret = SYNC_SLAVE_BAD; goto bail;
@@ -767,7 +767,7 @@ sync_boxes( store_t *mctx, const char *mname,
 				maxwuid = srec->muid;
 	} else
 		maxwuid = 0;
-	info( "Selecting master... " );
+	info( "Selecting master %s... ", mname );
 	debug( "selecting master [%d,%d]\n", minwuid, maxwuid );
 	switch (mdriver->select( mctx, minwuid, maxwuid, mexcs, nmexcs )) {
 	case DRV_STORE_BAD: ret = SYNC_MASTER_BAD; goto finish;