Document the '-ALL' option, remove mention of '*' (doesn't work well for

*nix systems).

src/sbbs3/delfiles.c

@@ -104,8 +104,9 @@ int main(int argc, char **argv)
 		"Filebase\n" ,DELFILES_VER, PLATFORM_DESC );
 
 	if(argc<2) {
-		printf("\n   usage: DELFILES <dir_code or * for ALL> [switches]\n");
+		printf("\n   usage: DELFILES [dir_code] [switches]\n");
 		printf("\nswitches: -LIB name All directories of specified library\n");
+		printf("          -ALL      Search all directories\n");
 		printf("          -NOT code Exclude specific directory\n");
 		printf("          -OFF      Remove files that are offline "
 			"(don't exist on disk)\n");