tests: rename client_create to create_client_and_test_surface

A more descriptive name to not be confused with create_client().

v2: Rebased: fix also devices-test.c.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Marek Chalupa <mchqwerty@gmail.com>
diff --git a/tests/presentation-test.c b/tests/presentation-test.c
index 421eddc..ae17b84 100644
--- a/tests/presentation-test.c
+++ b/tests/presentation-test.c
@@ -217,7 +217,7 @@
 	struct client *client;
 	struct feedback *fb;
 
-	client = client_create(100, 50, 123, 77);
+	client = create_client_and_test_surface(100, 50, 123, 77);
 	assert(client);
 
 	wl_surface_attach(client->surface->wl_surface,