Initial pgindent and pgperltidy run for v14.

Also "make reformat-dat-files".

The only change worthy of note is that pgindent messed up the formatting
of launcher.c's struct LogicalRepWorkerId, which led me to notice that
that struct wasn't used at all anymore, so I just took it out.

src/backend/storage/page/bufpage.c

@@ -259,7 +259,7 @@ PageAddItemExtended(Page page,
 			 * group at the end of the line pointer array.
 			 */
 			for (offsetNumber = FirstOffsetNumber;
-				 offsetNumber < limit;		/* limit is maxoff+1 */
+				 offsetNumber < limit;	/* limit is maxoff+1 */
 				 offsetNumber++)
 			{
 				itemId = PageGetItemId(phdr, offsetNumber);