Pre-beta mechanical code beautification.

Run pgindent, pgperltidy, and reformat-dat-files.

The pgindent part of this is pretty small, consisting mainly of
fixing up self-inflicted formatting damage from patches that
hadn't bothered to add their new typedefs to typedefs.list.
In order to keep it from making anything worse, I manually added
a dozen or so typedefs that appeared in the existing typedefs.list
but not in the buildfarm's list.  Perhaps we should formalize that,
or better find a way to get those typedefs into the automatic list.

pgperltidy is as opinionated as always, and reformat-dat-files too.

contrib/sepgsql/label.c

@@ -67,7 +67,7 @@ typedef struct
 {
 	SubTransactionId subid;
 	char	   *label;
-}			pending_label;
+} pending_label;
 
 /*
  * sepgsql_get_client_label