The heralded `Grand Unified Configuration scheme' (GUC)

That means you can now set your options in either or all of $PGDATA/configuration,
some postmaster option (--enable-fsync=off), or set a SET command. The list of
options is in backend/utils/misc/guc.c, documentation will be written post haste.

pg_options is gone, so is that pq_geqo config file. Also removed were backend -K,
-Q, and -T options (no longer applicable, although -d0 does the same as -Q).

Added to configure an --enable-syslog option.

changed all callers from TPRINTF to elog(DEBUG)

src/tools/release_prep

@@ -45,6 +45,13 @@ rm -f bootstrap_tokens.h bootparse.c bootscanner.c
 $MAKE bootstrap_tokens.h bootparse.c bootscanner.c
 cd ../..
 
+# Generate configuration file scanner
+
+cd backend/utils/misc
+rm -f guc-file.c lex.yy.c
+$MAKE guc-file.c
+cd ../../..
+
 # Generate ecpg preprocessor's yacc and lex files
 
 cd interfaces/ecpg/preproc