qobject: Use simpler QDict/QList scalar insertion macros

We now have macros in place to make it less verbose to add a scalar
to QDict and QList, so use them.

Patch created mechanically via:
  spatch --sp-file scripts/coccinelle/qobject.cocci \
    --macro-file scripts/cocci-macro-file.h --dir . --in-place
then touched up manually to fix a couple of '?:' back to original
spacing, as well as avoiding a long line in monitor.c.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20170427215821.19397-7-eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
diff --git a/qemu-img.c b/qemu-img.c
index c719636..f3b0ab4 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -313,7 +313,7 @@
 
     if (fmt) {
         options = qdict_new();
-        qdict_put(options, "driver", qstring_from_str(fmt));
+        qdict_put_str(options, "driver", fmt);
     }
 
     blk = blk_new_open(filename, NULL, options, flags, &local_err);
@@ -3094,7 +3094,7 @@
 
         if (bs->backing_format[0] != '\0') {
             options = qdict_new();
-            qdict_put(options, "driver", qstring_from_str(bs->backing_format));
+            qdict_put_str(options, "driver", bs->backing_format);
         }
 
         bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name));
@@ -3111,7 +3111,7 @@
         if (out_baseimg[0]) {
             if (out_basefmt) {
                 options = qdict_new();
-                qdict_put(options, "driver", qstring_from_str(out_basefmt));
+                qdict_put_str(options, "driver", out_basefmt);
             } else {
                 options = NULL;
             }