tests: Rename wayland-test to weston-test

wayland-test isn't and will never be wayland protocol, it's weston internal.

Renamed wayland-test to weston-test, and wl_test to weston_test.

Also added a Big Fat Warning to the description of weston_test to try to
keep people from thinking it's a good idea to use some of these functions
outside of testing.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Acked-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
diff --git a/tests/text-test.c b/tests/text-test.c
index 0d20add..62adf81 100644
--- a/tests/text-test.c
+++ b/tests/text-test.c
@@ -187,7 +187,7 @@
 	wl_text_input_add_listener(text_input, &text_input_listener, &state);
 
 	/* Make sure our test surface has keyboard focus. */
-	wl_test_activate_surface(client->test->wl_test,
+	weston_test_activate_surface(client->test->weston_test,
 				 client->surface->wl_surface);
 	client_roundtrip(client);
 	assert(client->input->keyboard->focus == client->surface);
@@ -210,7 +210,7 @@
 	assert(state.activated == 2 && state.deactivated == 1);
 
 	/* Take keyboard focus away and verify we get leave event. */
-	wl_test_activate_surface(client->test->wl_test, NULL);
+	weston_test_activate_surface(client->test->weston_test, NULL);
 	client_roundtrip(client);
 	assert(state.activated == 2 && state.deactivated == 2);
 }