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/text-test.c b/tests/text-test.c
index 62adf81..1f6a4a2 100644
--- a/tests/text-test.c
+++ b/tests/text-test.c
@@ -169,7 +169,7 @@
 	struct wl_text_input *text_input;
 	struct text_input_state state;
 
-	client = client_create(100, 100, 100, 100);
+	client = create_client_and_test_surface(100, 100, 100, 100);
 	assert(client);
 
 	factory = NULL;