Changes from Jonathan Riehl to allow his pgen extension (PEP 269) to
work.  This includes some more code that used to be part of pgen in
the main parser; I'm okay with that.  I'll see if the Windows build
needs work next.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 5313030..d461346 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -194,7 +194,10 @@
 		Parser/parser.o \
 		Parser/parsetok.o \
 		Parser/bitset.o \
-		Parser/metagrammar.o
+		Parser/metagrammar.o \
+		Parser/firstsets.o \
+		Parser/grammar.o \
+		Parser/pgen.o
 
 PARSER_OBJS=	$(POBJS) Parser/myreadline.o Parser/tokenizer.o
 
@@ -202,9 +205,6 @@
 		Objects/obmalloc.o \
 		Python/mysnprintf.o \
 		Parser/tokenizer_pgen.o \
-		Parser/firstsets.o \
-		Parser/grammar.o \
-		Parser/pgen.o \
 		Parser/printgrammar.o \
 		Parser/pgenmain.o