code cleanup:

- add missing headers from cmake (own omission)
- quiet rna_test.c unused define warnings.
- minor style edits
- spelling corrections and ignore all uppercase words with spell checking script.

source/blender/editors/render/render_internal.c

@@ -503,7 +503,8 @@ static void render_endjob(void *rjv)
 	 *                                          - sergey -
 	 */
 	if (rj->scene->r.layers.first != rj->scene->r.layers.last ||
-	    rj->image_outdated) {
+	    rj->image_outdated)
+	{
 		void *lock;
 		Image *ima = rj->image;
 		ImBuf *ibuf = BKE_image_acquire_ibuf(ima, &rj->iuser, &lock);