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/commit_ts.h

@@ -57,7 +57,7 @@ typedef struct xl_commit_ts_set
 	RepOriginId nodeid;
 	TransactionId mainxid;
 	/* subxact Xids follow */
-} xl_commit_ts_set;
+}			xl_commit_ts_set;
 
 #define SizeOfCommitTsSet	(offsetof(xl_commit_ts_set, mainxid) + \
 							 sizeof(TransactionId))