Tidy

- Kill unused vars in wrlib
- Add missing initializers to defaults.c:staticOptionList
- Re-format it slightly
- Kill some dead code
- Kill stupid "if (const op var)"

wrlib/gif.c

@@ -37,7 +37,7 @@ static int InterlacedJumps[] = { 8, 8, 4, 2 };
 /*
  * Partially based on code in gif2rgb from giflib, by Gershon Elber.
  */
-RImage *RLoadGIF(RContext * context, char *file, int index)
+RImage *RLoadGIF(char *file, int index)
 {
 	RImage *image = NULL;
 	unsigned char *cptr;