postgresql.conf: align variable comments, mostly new ones

Backpatch-through: master

src/backend/utils/misc/postgresql.conf.sample

@@ -52,13 +52,13 @@
 
 # - SLRU Buffers (change requires restart) -
 
-#commit_timestamp_buffers = 0			# memory for pg_commit_ts (0 = auto)
-#multixact_offset_buffers = 16			# memory for pg_multixact/offsets
-#multixact_member_buffers = 32			# memory for pg_multixact/members
-#notify_buffers = 16					# memory for pg_notify
-#serializable_buffers = 32				# memory for pg_serial
-#subtransaction_buffers = 0 			# memory for pg_subtrans (0 = auto)
-#transaction_buffers = 0				# memory for pg_xact (0 = auto)
+#commit_timestamp_buffers = 0		# memory for pg_commit_ts (0 = auto)
+#multixact_offset_buffers = 16		# memory for pg_multixact/offsets
+#multixact_member_buffers = 32		# memory for pg_multixact/members
+#notify_buffers = 16			# memory for pg_notify
+#serializable_buffers = 32		# memory for pg_serial
+#subtransaction_buffers = 0 		# memory for pg_subtrans (0 = auto)
+#transaction_buffers = 0		# memory for pg_xact (0 = auto)
 
 #------------------------------------------------------------------------------
 # CONNECTIONS AND AUTHENTICATION
@@ -176,7 +176,7 @@
 					# in kilobytes, or -1 for no limit
 
 #max_notify_queue_pages = 1048576	# limits the number of SLRU pages allocated
-									# for NOTIFY / LISTEN queue
+					# for NOTIFY / LISTEN queue
 
 # - Kernel Resources -
 
@@ -314,8 +314,8 @@
 
 # - WAL Summarization -
 
-#summarize_wal = off			 # run WAL summarizer process?
-#wal_summary_keep_time = '10d' # when to remove old summary files, 0 = never
+#summarize_wal = off		# run WAL summarizer process?
+#wal_summary_keep_time = '10d'	# when to remove old summary files, 0 = never
 
 
 #------------------------------------------------------------------------------
@@ -344,7 +344,7 @@
 				# method to choose sync standbys, number of sync standbys,
 				# and comma-separated list of application_name
 				# from standby(s); '*' = all
-#standby_slot_names = '' # streaming replication standby server slot names that
+#standby_slot_names = ''	# streaming replication standby server slot names that
 				# logical walsender processes will wait for
 
 # - Standby Servers -
@@ -373,7 +373,7 @@
 #wal_retrieve_retry_interval = 5s	# time to wait before retrying to
 					# retrieve WAL after a failed attempt
 #recovery_min_apply_delay = 0		# minimum delay for applying changes during recovery
-#sync_replication_slots = off			# enables slot synchronization on the physical standby from the primary
+#sync_replication_slots = off		# enables slot synchronization on the physical standby from the primary
 
 # - Subscribers -