Add cleaner formatting to config file.

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

-#
+# -----------------------------
 # PostgreSQL configuration file
 # -----------------------------
 #
@@ -21,16 +21,11 @@
 # "pg_ctl reload".
 
 
-#========================================================================
-
-
-#
-#	Connection Parameters
-#
-
+#---------------------------------------------------------------------------
 # CONNECTIONS AND AUTHENTICATION
-# ----------------------------------
-# Connection Settings
+#---------------------------------------------------------------------------
+
+# - Connection Settings -
 
 #tcpip_socket = false
 #max_connections = 32
@@ -44,7 +39,7 @@
 #unix_socket_permissions = 0777	# octal
 #virtual_host = ''
 
-# Security & Authentication
+# - Security & Authentication -
 
 #authentication_timeout = 60	# 1-600, in seconds
 #ssl = false
@@ -53,35 +48,39 @@
 #db_user_namespace = false
 
 
+#---------------------------------------------------------------------------
 # RESOURCE USAGE (except WAL)
-# ---------------------------------
-# Memory
+#---------------------------------------------------------------------------
+
+# - Memory -
 
 #shared_buffers = 64		# min 16, at least max_connections*2, 8KB each
 #sort_mem = 1024		# min 64, size in KB
 #vacuum_mem = 8192		# min 1024, size in KB
 
-# Free Space Map
+# - Free Space Map -
 
 #max_fsm_pages = 20000		# min max_fsm_relations*16, 6 bytes each
 #max_fsm_relations = 1000	# min 100, ~50 bytes each
 
-# Kernel Resource Usage
+# - Kernel Resource Usage -
 
 #max_files_per_process = 1000	# min 25
 #preload_libraries = ''
 
 
+#---------------------------------------------------------------------------
 # WRITE AHEAD LOG
-# ---------------------------------
-# Settings
+#---------------------------------------------------------------------------
+
+# - Settings -
 
 #fsync = true			# turns forced synchronization on or off
 #wal_sync_method = fsync	# the default varies across platforms:
 				# fsync, fdatasync, open_sync, or open_datasync
 #wal_buffers = 8		# min 4, 8KB each
 
-# Checkpoints
+# - Checkpoints -
 
 #checkpoint_segments = 3	# in logfile segments, min 1, 16MB each
 #checkpoint_timeout = 300	# range 30-3600, in seconds
@@ -90,9 +89,11 @@
 #commit_siblings = 5		# range 1-1000
 
 
+#---------------------------------------------------------------------------
 # QUERY TUNING
-# --------------------------------
-# Planner Method Enabling
+#---------------------------------------------------------------------------
+
+# - Planner Method Enabling -
 
 #enable_hashagg = true
 #enable_hashjoin = true
@@ -103,7 +104,7 @@
 #enable_sort = true
 #enable_tidscan = true
 
-# Planner Cost Constants
+# - Planner Cost Constants -
 
 #effective_cache_size = 1000	# typically 8KB each
 #random_page_cost = 4		# units are one sequential page fetch cost
@@ -111,7 +112,7 @@
 #cpu_index_tuple_cost = 0.001	# (same)
 #cpu_operator_cost = 0.0025	# (same)
 
-# Genetic Query Optimizer
+# - Genetic Query Optimizer -
 
 #geqo = true
 #geqo_threshold = 11
@@ -122,22 +123,24 @@
 #geqo_random_seed = -1		# -1 = use variable seed
 #geqo_selection_bias = 2.0	# range 1.5-2.0
 
-# Other Planner Options
+# - Other Planner Options -
 
 #default_statistics_target = 10	# range 1-1000
 #from_collapse_limit = 8
 #join_collapse_limit = 8	# 1 disables collapsing of explicit JOINs
 
 
+#---------------------------------------------------------------------------
 # ERROR REPORTING AND LOGGING
-# ------------------------------------
-# Syslog
+#---------------------------------------------------------------------------
+
+# - Syslog -
 
 #syslog = 0			# range 0-2
 #syslog_facility = 'LOCAL0'
 #syslog_ident = 'postgres'
 
-# When to Log
+# - When to Log -
 
 #client_min_messages = notice	# Values, in order of decreasing detail:
 				#   debug5, debug4, debug3, debug2, debug1,
@@ -160,7 +163,7 @@
 
 #silent_mode = false		 # DO NOT USE without Syslog!
 
-# What to Log
+# - What to Log -
 
 #debug_print_parse = false
 #debug_print_rewritten = false
@@ -174,16 +177,19 @@
 #log_hostname = false
 #log_source_port = false
 
+
+#---------------------------------------------------------------------------
 # RUNTIME STATISTICS
-# -------------------------------------
-# Statistics Monitoring
+#---------------------------------------------------------------------------
+
+# - Statistics Monitoring -
 
 #log_parser_stats = false
 #log_planner_stats = false
 #log_executor_stats = false
 #log_statement_stats = false
 
-# Query/Index Statistics Collector
+# - Query/Index Statistics Collector -
 
 #stats_start_collector = true
 #stats_command_string = false
@@ -192,16 +198,18 @@
 #stats_reset_on_server_start = true
 
 
+#---------------------------------------------------------------------------
 # CLIENT CONNECTION DEFAULTS
-# -------------------------------------
-# Statement Behavior
+#---------------------------------------------------------------------------
+
+# - Statement Behavior -
 
 #search_path = '$user,public'	# schema names
 #default_transaction_isolation = 'read committed'
 #default_transaction_read_only = false
 #statement_timeout = 0		# 0 is disabled, in milliseconds
 
-# Locale and Formatting
+# - Locale and Formatting -
 
 #datestyle = 'iso, us'
 #timezone = unknown		# actually, defaults to TZ environment setting
@@ -215,27 +223,31 @@
 #lc_numeric = 'C'		# locale for number formatting
 #lc_time = 'C'			# locale for time formatting
 
-# Other Defaults
+# - Other Defaults -
 
 #explain_pretty_print = true
 #dynamic_library_path = '$libdir'
 #max_expr_depth = 10000		# min 10
 
+
+#---------------------------------------------------------------------------
 # LOCK MANAGEMENT
-# -----------------------------------------
+#---------------------------------------------------------------------------
 
 #deadlock_timeout = 1000	# in milliseconds
 #max_locks_per_transaction = 64	# min 10, ~260*max_connections bytes each
 
 
+#---------------------------------------------------------------------------
 # VERSION/PLATFORM COMPATIBILITY
-# -----------------------------------------
-# Previous Postgres Versions
+#---------------------------------------------------------------------------
+
+# - Previous Postgres Versions -
 
 #add_missing_from = true
 #regex_flavor = advanced	# advanced, extended, or basic
 #sql_inheritance = true
 
-# Other Platforms & Clients
+# - Other Platforms & Clients -
 
 #transform_null_equals = false