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/include/access/transam.h

@@ -238,7 +238,7 @@ typedef struct VariableCacheData
 	 * GetSnapshotData() needs to recompute the contents of the snapshot, or
 	 * not. There are likely other users of this.  Always above 1.
 	 */
-	uint64 xactCompletionCount;
+	uint64		xactCompletionCount;
 
 	/*
 	 * These fields are protected by XactTruncationLock